<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019fa90d-cf72-7a59-a3e6-cd08737c8777,g:99625e16-ebfe-41dc-b46a-6237da4af587-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationSegmentInformationDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#DescriptionofbusinessincludingsegmentandgeographicareainformationSegmentInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationSegmentInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019fa90d-d68c-7fc9-a866-bfd0622bec08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019fa90d-d68c-7fc9-a866-bfd0622bec08" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019fa90d-d68c-74d3-9a92-14a6dcb4c2b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019fa90d-d68c-7fc9-a866-bfd0622bec08" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019fa90d-d68c-74d3-9a92-14a6dcb4c2b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019fa90d-d68c-74d3-9a92-14a6dcb4c2b3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019fa90d-d68c-74d3-9a92-14a6dcb4c2b3" xlink:to="loc_us-gaap_SegmentDomain_019fa90d-d68c-74d3-9a92-14a6dcb4c2b3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019fa90d-d68c-705e-a7db-cb58c6ba6ced" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019fa90d-d68c-74d3-9a92-14a6dcb4c2b3" xlink:to="loc_us-gaap_SegmentDomain_019fa90d-d68c-705e-a7db-cb58c6ba6ced" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_AnalogSegmentMember_019fa90d-d68c-7542-b1c3-3dcb01ea62aa" xlink:href="txn-20260930.xsd#txn_AnalogSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019fa90d-d68c-705e-a7db-cb58c6ba6ced" xlink:to="loc_txn_AnalogSegmentMember_019fa90d-d68c-7542-b1c3-3dcb01ea62aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_EmbeddedProcessingSegmentMember_019fa90d-d68c-7d55-b0bf-888e6066926a" xlink:href="txn-20260930.xsd#txn_EmbeddedProcessingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019fa90d-d68c-705e-a7db-cb58c6ba6ced" xlink:to="loc_txn_EmbeddedProcessingSegmentMember_019fa90d-d68c-7d55-b0bf-888e6066926a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_019fa90d-d68c-712d-948d-e7b1276f398b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllOtherSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019fa90d-d68c-705e-a7db-cb58c6ba6ced" xlink:to="loc_us-gaap_AllOtherSegmentsMember_019fa90d-d68c-712d-948d-e7b1276f398b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019fa90d-d68c-7cb8-abcc-17e4c3cf57d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019fa90d-d68c-7cb8-abcc-17e4c3cf57d8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019fa90d-d68c-7506-8cb5-2f759c2591a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019fa90d-d68c-7506-8cb5-2f759c2591a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019fa90d-d68c-782f-8c71-35a828d1f7c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:to="loc_us-gaap_GrossProfit_019fa90d-d68c-782f-8c71-35a828d1f7c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_019fa90d-d68c-7a8b-b79c-4b45606e34c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_019fa90d-d68c-7a8b-b79c-4b45606e34c5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019fa90d-d68c-7bb4-ac5a-cfdb866dbd65" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019fa90d-d68c-7bb4-ac5a-cfdb866dbd65" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019fa90d-d68c-7f48-be67-29e8875fc7ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019fa90d-d68c-7f48-be67-29e8875fc7ff" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_RestructuringChargesAndOtherNet_01a05d2e-d195-75d5-8650-293b1c7bb808" xlink:href="txn-20260930.xsd#txn_RestructuringChargesAndOtherNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:to="loc_txn_RestructuringChargesAndOtherNet_01a05d2e-d195-75d5-8650-293b1c7bb808" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019fa90d-d68c-7055-b353-e90af31377c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7b03-ac04-6377981cb5e1" xlink:to="loc_us-gaap_OperatingIncomeLoss_019fa90d-d68c-7055-b353-e90af31377c1" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationGeographicAreaInformationDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#DescriptionofbusinessincludingsegmentandgeographicareainformationGeographicAreaInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DescriptionofbusinessincludingsegmentandgeographicareainformationGeographicAreaInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7397-bc07-e47a86a5763d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019fa90d-d68c-7b3f-9a71-1c25637b5130" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7397-bc07-e47a86a5763d" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019fa90d-d68c-7b3f-9a71-1c25637b5130" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019fa90d-d68c-7cb4-8260-0235338c9fff" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019fa90d-d68c-7b3f-9a71-1c25637b5130" xlink:to="loc_srt_StatementGeographicalAxis_019fa90d-d68c-7cb4-8260-0235338c9fff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-7cb4-8260-0235338c9fff_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019fa90d-d68c-7cb4-8260-0235338c9fff" xlink:to="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-7cb4-8260-0235338c9fff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-736d-bb65-814a6f344094" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019fa90d-d68c-7cb4-8260-0235338c9fff" xlink:to="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-736d-bb65-814a6f344094" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019fa90d-d68c-7704-a9e9-602de3533679" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-736d-bb65-814a6f344094" xlink:to="loc_country_US_019fa90d-d68c-7704-a9e9-602de3533679" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CN_019fa90d-d68c-7a91-a710-74b4233e36a1" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_CN"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-736d-bb65-814a6f344094" xlink:to="loc_country_CN_019fa90d-d68c-7a91-a710-74b4233e36a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_RestOfAsiaMember_019fa90d-d68c-789e-a404-448fd5bfcc3f" xlink:href="txn-20260930.xsd#txn_RestOfAsiaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-736d-bb65-814a6f344094" xlink:to="loc_txn_RestOfAsiaMember_019fa90d-d68c-789e-a404-448fd5bfcc3f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EMEAMember_019fa90d-d68c-70fd-b201-b0f0dfd5db56" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EMEAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-736d-bb65-814a6f344094" xlink:to="loc_us-gaap_EMEAMember_019fa90d-d68c-70fd-b201-b0f0dfd5db56" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_JP_019fa90d-d68c-7c69-a914-01a20a0e3703" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_JP"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-736d-bb65-814a6f344094" xlink:to="loc_country_JP_019fa90d-d68c-7c69-a914-01a20a0e3703" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_RestOfWorldMember_019fa90d-d68c-7447-868b-c2117e08b260" xlink:href="txn-20260930.xsd#txn_RestOfWorldMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-736d-bb65-814a6f344094" xlink:to="loc_txn_RestOfWorldMember_019fa90d-d68c-7447-868b-c2117e08b260" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_DE_019fa90d-d68c-7cd5-a089-1bd45214e7bd" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_DE"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019fa90d-d68c-736d-bb65-814a6f344094" xlink:to="loc_country_DE_019fa90d-d68c-7cd5-a089-1bd45214e7bd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019fa90d-d68c-7937-8c78-6edb05fbb1ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019fa90d-d68c-7b3f-9a71-1c25637b5130" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019fa90d-d68c-7937-8c78-6edb05fbb1ed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019fa90d-d68c-7937-8c78-6edb05fbb1ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019fa90d-d68c-7937-8c78-6edb05fbb1ed" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019fa90d-d68c-7937-8c78-6edb05fbb1ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019fa90d-d68c-7dac-ab79-4ab872470617" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019fa90d-d68c-7937-8c78-6edb05fbb1ed" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019fa90d-d68c-7dac-ab79-4ab872470617" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerProductAndServiceBenchmarkMember_019fa90d-d68c-774e-98a5-eff6f6aeeec4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerProductAndServiceBenchmarkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019fa90d-d68c-7dac-ab79-4ab872470617" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerProductAndServiceBenchmarkMember_019fa90d-d68c-774e-98a5-eff6f6aeeec4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_019fa90d-d68c-753b-829d-fa5db648a543" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019fa90d-d68c-7b3f-9a71-1c25637b5130" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_019fa90d-d68c-753b-829d-fa5db648a543" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_019fa90d-d68c-753b-829d-fa5db648a543_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_019fa90d-d68c-753b-829d-fa5db648a543" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_019fa90d-d68c-753b-829d-fa5db648a543_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_019fa90d-d68c-7193-8d8e-de0079eff69e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_019fa90d-d68c-753b-829d-fa5db648a543" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_019fa90d-d68c-7193-8d8e-de0079eff69e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_019fa90d-d68c-74d1-8958-1affd3fd6219" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeographicConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_019fa90d-d68c-7193-8d8e-de0079eff69e" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_019fa90d-d68c-74d1-8958-1affd3fd6219" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019fa90d-d68c-7a02-9f29-4f41db6763c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7397-bc07-e47a86a5763d" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019fa90d-d68c-7a02-9f29-4f41db6763c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_019fa90d-d68c-7ab6-8a86-e0f2e4502cdc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019fa90d-d68c-7397-bc07-e47a86a5763d" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_019fa90d-d68c-7ab6-8a86-e0f2e4502cdc" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#BasisofpresentationandsignificantaccountingpoliciesandpracticesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/BasisofpresentationandsignificantaccountingpoliciesandpracticesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7fd3-864a-f7c3a429aca4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-76f0-b07c-8ac4a05c8a43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7fd3-864a-f7c3a429aca4" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-76f0-b07c-8ac4a05c8a43" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-7aeb-a2bd-c1eece28a2b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-76f0-b07c-8ac4a05c8a43" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-7aeb-a2bd-c1eece28a2b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-7aeb-a2bd-c1eece28a2b5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-7aeb-a2bd-c1eece28a2b5" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-7aeb-a2bd-c1eece28a2b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-70eb-946a-86d862ca2c5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-7aeb-a2bd-c1eece28a2b5" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-70eb-946a-86d862ca2c5f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019fa90d-d68c-765d-a39e-090c1e6eeaa8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-70eb-946a-86d862ca2c5f" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019fa90d-d68c-765d-a39e-090c1e6eeaa8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019fa90d-d68c-7602-a7ac-571f8d130bcc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7fd3-864a-f7c3a429aca4" xlink:to="loc_us-gaap_LongTermDebt_019fa90d-d68c-7602-a7ac-571f8d130bcc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_019fa90d-d68c-7730-8a13-0f4c4bc10f2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7fd3-864a-f7c3a429aca4" xlink:to="loc_us-gaap_LongTermDebtFairValue_019fa90d-d68c-7730-8a13-0f4c4bc10f2e" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesInvestmentsatFairValueDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#ValuationofdebtandequityinvestmentsandcertainliabilitiesInvestmentsatFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesInvestmentsatFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7f1c-86a7-5ef3ccdd7d5b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-71a6-b03a-025fc466d23d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7f1c-86a7-5ef3ccdd7d5b" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-71a6-b03a-025fc466d23d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_019fa90d-d68c-7db4-a6db-015f32067792" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-71a6-b03a-025fc466d23d" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_019fa90d-d68c-7db4-a6db-015f32067792" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7db4-a6db-015f32067792_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_019fa90d-d68c-7db4-a6db-015f32067792" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7db4-a6db-015f32067792_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7429-9152-c127230b924d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_019fa90d-d68c-7db4-a6db-015f32067792" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7429-9152-c127230b924d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_019fa90d-d68c-76f9-8844-88ff8fc674b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7429-9152-c127230b924d" xlink:to="loc_us-gaap_MoneyMarketFundsMember_019fa90d-d68c-76f9-8844-88ff8fc674b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_019fa90d-d68c-70ac-8f11-369d296a6ec5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7429-9152-c127230b924d" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_019fa90d-d68c-70ac-8f11-369d296a6ec5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_019fa90d-d68c-72de-bd80-b4a84efbce1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7429-9152-c127230b924d" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_019fa90d-d68c-72de-bd80-b4a84efbce1f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_019fa90d-d68c-7aba-bd87-17d6c650d46a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7429-9152-c127230b924d" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_019fa90d-d68c-7aba-bd87-17d6c650d46a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MutualFundMember_019fa90d-d68c-796c-adab-79860ade2a30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MutualFundMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7429-9152-c127230b924d" xlink:to="loc_us-gaap_MutualFundMember_019fa90d-d68c-796c-adab-79860ade2a30" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAggregatedInvestmentsMember_019fa90d-d68c-7f6e-8174-f5eeff02e718" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAggregatedInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7429-9152-c127230b924d" xlink:to="loc_us-gaap_OtherAggregatedInvestmentsMember_019fa90d-d68c-7f6e-8174-f5eeff02e718" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashMember_019fa90d-d68c-7238-be74-bd848c2fa0d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7429-9152-c127230b924d" xlink:to="loc_us-gaap_CashMember_019fa90d-d68c-7238-be74-bd848c2fa0d0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019fa90d-d68c-76fd-9aa3-40f7d33bb4b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-71a6-b03a-025fc466d23d" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019fa90d-d68c-76fd-9aa3-40f7d33bb4b9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019fa90d-d68c-76fd-9aa3-40f7d33bb4b9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019fa90d-d68c-76fd-9aa3-40f7d33bb4b9" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019fa90d-d68c-76fd-9aa3-40f7d33bb4b9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019fa90d-d68c-7df5-ae95-2ea95ef60296" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019fa90d-d68c-76fd-9aa3-40f7d33bb4b9" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019fa90d-d68c-7df5-ae95-2ea95ef60296" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019fa90d-d68c-748d-8faa-ad7bf50c9128" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019fa90d-d68c-7df5-ae95-2ea95ef60296" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019fa90d-d68c-748d-8faa-ad7bf50c9128" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019fa90d-d68c-7f79-8112-db869b27f232" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019fa90d-d68c-748d-8faa-ad7bf50c9128" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019fa90d-d68c-7f79-8112-db869b27f232" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember_019fa90d-d68c-724a-98ae-42c92a01cc70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019fa90d-d68c-748d-8faa-ad7bf50c9128" xlink:to="loc_us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember_019fa90d-d68c-724a-98ae-42c92a01cc70" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019fa90d-d68c-7dbc-9294-c06c31417296" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7f1c-86a7-5ef3ccdd7d5b" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019fa90d-d68c-7dbc-9294-c06c31417296" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments_019fa90d-d68c-77ff-a0a9-d2ae336c863e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7f1c-86a7-5ef3ccdd7d5b" xlink:to="loc_us-gaap_ShortTermInvestments_019fa90d-d68c-77ff-a0a9-d2ae336c863e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermInvestments_019fa90d-d68c-7c3f-9254-a414b19039d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7f1c-86a7-5ef3ccdd7d5b" xlink:to="loc_us-gaap_LongTermInvestments_019fa90d-d68c-7c3f-9254-a414b19039d2" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#ValuationofdebtandequityinvestmentsandcertainliabilitiesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7478-affe-b016e91539b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-7211-bd01-32d44d51f7d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7478-affe-b016e91539b1" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-7211-bd01-32d44d51f7d3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-743d-8dc2-5c6a7670e140" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019fa90d-d68c-7211-bd01-32d44d51f7d3" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-743d-8dc2-5c6a7670e140" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-743d-8dc2-5c6a7670e140_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-743d-8dc2-5c6a7670e140" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-743d-8dc2-5c6a7670e140_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-7464-8b68-b5b3fe862fbe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-743d-8dc2-5c6a7670e140" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-7464-8b68-b5b3fe862fbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019fa90d-d68c-7470-b96b-c8136234afa5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-7464-8b68-b5b3fe862fbe" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019fa90d-d68c-7470-b96b-c8136234afa5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease_019fa90d-d68c-7d73-aae7-33a430ff36ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7478-affe-b016e91539b1" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease_019fa90d-d68c-7d73-aae7-33a430ff36ae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_019fa90d-d68c-724a-b0d0-2c3c6a3070b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7478-affe-b016e91539b1" xlink:to="loc_us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_019fa90d-d68c-724a-b0d0-2c3c6a3070b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019fa90d-d68c-7709-9eda-54fbdede0426" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7478-affe-b016e91539b1" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_019fa90d-d68c-7709-9eda-54fbdede0426" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_019fa90d-d68c-769d-b613-b7f895709fac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019fa90d-d68c-7478-affe-b016e91539b1" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_019fa90d-d68c-769d-b613-b7f895709fac" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#ValuationofdebtandequityinvestmentsandcertainliabilitiesFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/ValuationofdebtandequityinvestmentsandcertainliabilitiesFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019fa90d-d68c-7248-b537-ff33f3ea90f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019fa90d-d68c-7e33-bb61-e6b6639a616b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019fa90d-d68c-7248-b537-ff33f3ea90f5" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019fa90d-d68c-7e33-bb61-e6b6639a616b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019fa90d-d68c-7acd-94b0-2325f202edce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019fa90d-d68c-7e33-bb61-e6b6639a616b" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019fa90d-d68c-7acd-94b0-2325f202edce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019fa90d-d68c-7acd-94b0-2325f202edce_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019fa90d-d68c-7acd-94b0-2325f202edce" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019fa90d-d68c-7acd-94b0-2325f202edce_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019fa90d-d68c-70f5-857e-cf305ca43a06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019fa90d-d68c-7acd-94b0-2325f202edce" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019fa90d-d68c-70f5-857e-cf305ca43a06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_019fa90d-d68c-7410-93c0-6b20bcdf2252" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_019fa90d-d68c-70f5-857e-cf305ca43a06" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_019fa90d-d68c-7410-93c0-6b20bcdf2252" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_019fa90d-d68c-75c3-8192-ecda847337a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019fa90d-d68c-7e33-bb61-e6b6639a616b" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_019fa90d-d68c-75c3-8192-ecda847337a6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-75c3-8192-ecda847337a6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_019fa90d-d68c-75c3-8192-ecda847337a6" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-75c3-8192-ecda847337a6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7f58-979f-2b61a579ff0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_019fa90d-d68c-75c3-8192-ecda847337a6" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7f58-979f-2b61a579ff0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_019fa90d-d68c-74a5-a30d-2b0dd919d507" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7f58-979f-2b61a579ff0c" xlink:to="loc_us-gaap_MoneyMarketFundsMember_019fa90d-d68c-74a5-a30d-2b0dd919d507" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_019fa90d-d68c-753c-8781-db343779c72c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7f58-979f-2b61a579ff0c" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_019fa90d-d68c-753c-8781-db343779c72c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_019fa90d-d68c-7aaf-9dcf-7cb8fae93d37" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7f58-979f-2b61a579ff0c" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_019fa90d-d68c-7aaf-9dcf-7cb8fae93d37" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_019fa90d-d68c-76e7-b189-b4dde0537ca7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7f58-979f-2b61a579ff0c" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_019fa90d-d68c-76e7-b189-b4dde0537ca7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MutualFundMember_019fa90d-d68c-7cd8-a245-50941e13f875" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MutualFundMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_019fa90d-d68c-7f58-979f-2b61a579ff0c" xlink:to="loc_us-gaap_MutualFundMember_019fa90d-d68c-7cd8-a245-50941e13f875" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-741f-945d-5a4da8542aa4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019fa90d-d68c-7e33-bb61-e6b6639a616b" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-741f-945d-5a4da8542aa4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-741f-945d-5a4da8542aa4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-741f-945d-5a4da8542aa4" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-741f-945d-5a4da8542aa4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-78a6-8b99-def5bef9cc6f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019fa90d-d68c-741f-945d-5a4da8542aa4" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-78a6-8b99-def5bef9cc6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019fa90d-d68c-716b-bf8c-351b138013da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-78a6-8b99-def5bef9cc6f" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019fa90d-d68c-716b-bf8c-351b138013da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019fa90d-d68c-72e9-8336-3771011b18e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019fa90d-d68c-78a6-8b99-def5bef9cc6f" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019fa90d-d68c-72e9-8336-3771011b18e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_019fa90d-d68c-797d-ab55-501f054c7ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019fa90d-d68c-7e33-bb61-e6b6639a616b" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_019fa90d-d68c-797d-ab55-501f054c7ff6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_019fa90d-d68c-797d-ab55-501f054c7ff6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_019fa90d-d68c-797d-ab55-501f054c7ff6" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_019fa90d-d68c-797d-ab55-501f054c7ff6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_019fa90d-d68c-7b40-97a2-d7e360d5fe00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_019fa90d-d68c-797d-ab55-501f054c7ff6" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_019fa90d-d68c-7b40-97a2-d7e360d5fe00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_DeferredCompensationMember_019fa90d-d68c-7f9a-a64d-5f4f50467fce" xlink:href="txn-20260930.xsd#txn_DeferredCompensationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_019fa90d-d68c-7b40-97a2-d7e360d5fe00" xlink:to="loc_txn_DeferredCompensationMember_019fa90d-d68c-7f9a-a64d-5f4f50467fce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019fa90d-d68c-794e-9017-e1e4d3d2845d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019fa90d-d68c-7248-b537-ff33f3ea90f5" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_019fa90d-d68c-794e-9017-e1e4d3d2845d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_019fa90d-d68c-78a3-b56b-149a6ac30e4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019fa90d-d68c-7248-b537-ff33f3ea90f5" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_019fa90d-d68c-78a3-b56b-149a6ac30e4d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/PostretirementbenefitplansDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#PostretirementbenefitplansDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/PostretirementbenefitplansDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019fa90d-d68c-7346-be05-065addc6acac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019fa90d-d68c-7346-be05-065addc6acac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_019fa90d-d68c-79da-8436-9a61d45b8554" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019fa90d-d68c-7346-be05-065addc6acac" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_019fa90d-d68c-79da-8436-9a61d45b8554" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_019fa90d-d68c-79da-8436-9a61d45b8554_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_019fa90d-d68c-79da-8436-9a61d45b8554" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_019fa90d-d68c-79da-8436-9a61d45b8554_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_019fa90d-d68c-70a9-ba7b-741ef0ad7463" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_019fa90d-d68c-79da-8436-9a61d45b8554" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_019fa90d-d68c-70a9-ba7b-741ef0ad7463" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_019fa90d-d68c-7a8c-9818-ed3039869c4f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_019fa90d-d68c-70a9-ba7b-741ef0ad7463" xlink:to="loc_us-gaap_DomesticPlanMember_019fa90d-d68c-7a8c-9818-ed3039869c4f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019fa90d-d68c-7dd7-b501-4e8ca81e8299" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_019fa90d-d68c-7a8c-9818-ed3039869c4f" xlink:to="loc_country_US_019fa90d-d68c-7dd7-b501-4e8ca81e8299" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_019fa90d-d68c-79ea-a4b6-77657d63109c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_019fa90d-d68c-7a8c-9818-ed3039869c4f" xlink:to="loc_us-gaap_ForeignPlanMember_019fa90d-d68c-79ea-a4b6-77657d63109c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_019fa90d-d68c-76db-868f-a9cdc58b49fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_019fa90d-d68c-7346-be05-065addc6acac" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_019fa90d-d68c-76db-868f-a9cdc58b49fa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_019fa90d-d68c-76db-868f-a9cdc58b49fa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_019fa90d-d68c-76db-868f-a9cdc58b49fa" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_019fa90d-d68c-76db-868f-a9cdc58b49fa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_019fa90d-d68c-73f0-ba62-0a3191136a8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_019fa90d-d68c-76db-868f-a9cdc58b49fa" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_019fa90d-d68c-73f0-ba62-0a3191136a8d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_019fa90d-d68c-7964-9a03-453e20bcebee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_019fa90d-d68c-73f0-ba62-0a3191136a8d" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_019fa90d-d68c-7964-9a03-453e20bcebee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_019fa90d-d68c-7e4d-ad2d-10f618ad294f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPostretirementHealthCoverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_019fa90d-d68c-73f0-ba62-0a3191136a8d" xlink:to="loc_us-gaap_DefinedBenefitPostretirementHealthCoverageMember_019fa90d-d68c-7e4d-ad2d-10f618ad294f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_019fa90d-d68c-7bed-b92d-c38d4a1a025c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_019fa90d-d68c-7bed-b92d-c38d4a1a025c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_019fa90d-d68c-7d0d-9a03-da5803c973e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_019fa90d-d68c-7d0d-9a03-da5803c973e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_019fa90d-d68c-71e6-b179-e2c8c69f0110" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_019fa90d-d68c-71e6-b179-e2c8c69f0110" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_019fa90d-d68c-7771-80a8-86bacdce4b81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_019fa90d-d68c-7771-80a8-86bacdce4b81" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_019fa90d-d68c-72d8-8929-39bbea778955" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_019fa90d-d68c-72d8-8929-39bbea778955" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_DefinedBenefitPlanNetPeriodicBenefitCostNetOfCharges_019fa90d-d68c-735d-b9b8-88b78b9d6f4c" xlink:href="txn-20260930.xsd#txn_DefinedBenefitPlanNetPeriodicBenefitCostNetOfCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:to="loc_txn_DefinedBenefitPlanNetPeriodicBenefitCostNetOfCharges_019fa90d-d68c-735d-b9b8-88b78b9d6f4c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_019fa90d-d68c-73ef-8dd3-3dbf5a9cb9cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_019fa90d-d68c-73ef-8dd3-3dbf5a9cb9cb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019fa90d-d68c-7d29-95ef-fe9bd2df2f9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_019fa90d-d68c-7ddb-952a-fbc54229708d" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_019fa90d-d68c-7d29-95ef-fe9bd2df2f9a" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/DebtandlinesofcreditAdditionalInformationDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#DebtandlinesofcreditAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DebtandlinesofcreditAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7d85-aa0a-9265ba43d0ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019fa90d-d68c-7423-a8dc-92ba1ce3c0c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7d85-aa0a-9265ba43d0ca" xlink:to="loc_us-gaap_DebtInstrumentTable_019fa90d-d68c-7423-a8dc-92ba1ce3c0c5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019fa90d-d68c-7491-8237-3c561791eb74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019fa90d-d68c-7423-a8dc-92ba1ce3c0c5" xlink:to="loc_us-gaap_CreditFacilityAxis_019fa90d-d68c-7491-8237-3c561791eb74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019fa90d-d68c-7491-8237-3c561791eb74_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019fa90d-d68c-7491-8237-3c561791eb74" xlink:to="loc_us-gaap_CreditFacilityDomain_019fa90d-d68c-7491-8237-3c561791eb74_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019fa90d-d68c-7d0c-814c-9ef6bb50e44d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019fa90d-d68c-7491-8237-3c561791eb74" xlink:to="loc_us-gaap_CreditFacilityDomain_019fa90d-d68c-7d0c-814c-9ef6bb50e44d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019fa90d-d68c-75f7-acfa-e20c20136d4c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019fa90d-d68c-7d0c-814c-9ef6bb50e44d" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019fa90d-d68c-75f7-acfa-e20c20136d4c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DelayedDrawTermLoanMember_019fa90d-d68c-7bdf-a5f4-d1170532b760" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DelayedDrawTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019fa90d-d68c-7d0c-814c-9ef6bb50e44d" xlink:to="loc_us-gaap_DelayedDrawTermLoanMember_019fa90d-d68c-7bdf-a5f4-d1170532b760" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a05d27-bc03-779f-a5fb-ed201a0fc55a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019fa90d-d68c-7423-a8dc-92ba1ce3c0c5" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a05d27-bc03-779f-a5fb-ed201a0fc55a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a05d27-bc03-779f-a5fb-ed201a0fc55a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a05d27-bc03-779f-a5fb-ed201a0fc55a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a05d27-bc03-779f-a5fb-ed201a0fc55a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a05d27-bc03-7b1b-b7a5-e5420a1eac53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a05d27-bc03-779f-a5fb-ed201a0fc55a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a05d27-bc03-7b1b-b7a5-e5420a1eac53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedOnePointOneTwoFivePercentNotesDue2026Member_01a05d28-5094-7393-925c-ef8bbb4145f3" xlink:href="txn-20260930.xsd#txn_FixedOnePointOneTwoFivePercentNotesDue2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a05d27-bc03-7b1b-b7a5-e5420a1eac53" xlink:to="loc_txn_FixedOnePointOneTwoFivePercentNotesDue2026Member_01a05d28-5094-7393-925c-ef8bbb4145f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019fa90d-d68c-775a-834b-091bad6261d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7d85-aa0a-9265ba43d0ca" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019fa90d-d68c-775a-834b-091bad6261d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaper_019fa90d-d68c-7087-8d03-a00e3dd5c598" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPaper"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7d85-aa0a-9265ba43d0ca" xlink:to="loc_us-gaap_CommercialPaper_019fa90d-d68c-7087-8d03-a00e3dd5c598" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_01a05d27-bc03-76a3-9bf0-a50d17ae29c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7d85-aa0a-9265ba43d0ca" xlink:to="loc_us-gaap_RepaymentsOfDebt_01a05d27-bc03-76a3-9bf0-a50d17ae29c3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDebtExpense_019fa90d-d68c-741b-9245-81816d9a0fbd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndDebtExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7d85-aa0a-9265ba43d0ca" xlink:to="loc_us-gaap_InterestAndDebtExpense_019fa90d-d68c-741b-9245-81816d9a0fbd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestCostsCapitalized_019fa90d-d68c-730a-bb55-04e0fc84066e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestCostsCapitalized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7d85-aa0a-9265ba43d0ca" xlink:to="loc_us-gaap_InterestCostsCapitalized_019fa90d-d68c-730a-bb55-04e0fc84066e" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/DebtandlinesofcreditScheduleofLongtermDebtOutstandingDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#DebtandlinesofcreditScheduleofLongtermDebtOutstandingDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/DebtandlinesofcreditScheduleofLongtermDebtOutstandingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7c97-b7ae-f391410ab356" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019fa90d-d68c-7bac-a227-370562edf6aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7c97-b7ae-f391410ab356" xlink:to="loc_us-gaap_DebtInstrumentTable_019fa90d-d68c-7bac-a227-370562edf6aa" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019fa90d-d68c-7c3c-8d38-881241ef7715" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019fa90d-d68c-7bac-a227-370562edf6aa" xlink:to="loc_us-gaap_DebtInstrumentAxis_019fa90d-d68c-7c3c-8d38-881241ef7715" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7c3c-8d38-881241ef7715_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019fa90d-d68c-7c3c-8d38-881241ef7715" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7c3c-8d38-881241ef7715_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019fa90d-d68c-7c3c-8d38-881241ef7715" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedOnePointOneTwoFivePercentNotesDue2026Member_019fa90d-d68c-76a3-b241-d13b98f27341" xlink:href="txn-20260930.xsd#txn_FixedOnePointOneTwoFivePercentNotesDue2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedOnePointOneTwoFivePercentNotesDue2026Member_019fa90d-d68c-76a3-b241-d13b98f27341" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFourPointSixZeroPercentNotesDueTwoThousandTwentySevenMember_019fa90d-d68c-7835-8b6a-7df15cd4156b" xlink:href="txn-20260930.xsd#txn_FixedFourPointSixZeroPercentNotesDueTwoThousandTwentySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFourPointSixZeroPercentNotesDueTwoThousandTwentySevenMember_019fa90d-d68c-7835-8b6a-7df15cd4156b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedTwoPointNineZeroPercentNotesDueTwoThousandAndTwentySevenMember_019fa90d-d68c-73d2-9919-8d90bf820971" xlink:href="txn-20260930.xsd#txn_FixedTwoPointNineZeroPercentNotesDueTwoThousandAndTwentySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedTwoPointNineZeroPercentNotesDueTwoThousandAndTwentySevenMember_019fa90d-d68c-73d2-9919-8d90bf820971" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFourPointSixZeroPercentNotesDueTwoThousandTwentyEightMember_019fa90d-d68c-7a87-ba33-8475353df69d" xlink:href="txn-20260930.xsd#txn_FixedFourPointSixZeroPercentNotesDueTwoThousandTwentyEightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFourPointSixZeroPercentNotesDueTwoThousandTwentyEightMember_019fa90d-d68c-7a87-ba33-8475353df69d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFourPointSixZeroPercentNotesDueTwoThousandTwentyNineMember_019fa90d-d68c-7a76-8dc0-0691c2afd744" xlink:href="txn-20260930.xsd#txn_FixedFourPointSixZeroPercentNotesDueTwoThousandTwentyNineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFourPointSixZeroPercentNotesDueTwoThousandTwentyNineMember_019fa90d-d68c-7a76-8dc0-0691c2afd744" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedTwoPointTwoFivePercentNotesDueTwoThousandTwentyNineMember_019fa90d-d68c-79e2-b866-2dade85e9c90" xlink:href="txn-20260930.xsd#txn_FixedTwoPointTwoFivePercentNotesDueTwoThousandTwentyNineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedTwoPointTwoFivePercentNotesDueTwoThousandTwentyNineMember_019fa90d-d68c-79e2-b866-2dade85e9c90" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedOnePointSevenFivePercentDueTwoThousandThirtyMember_019fa90d-d68c-7cf8-8e84-d3b364706c90" xlink:href="txn-20260930.xsd#txn_FixedOnePointSevenFivePercentDueTwoThousandThirtyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedOnePointSevenFivePercentDueTwoThousandThirtyMember_019fa90d-d68c-7cf8-8e84-d3b364706c90" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFourPointFiveZeroPercentDueTwoThousandThirtyMember_019fa90d-d68c-7a7d-9956-10c09bbf3b0b" xlink:href="txn-20260930.xsd#txn_FixedFourPointFiveZeroPercentDueTwoThousandThirtyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFourPointFiveZeroPercentDueTwoThousandThirtyMember_019fa90d-d68c-7a7d-9956-10c09bbf3b0b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedOnePointNinePercentNotesDue2031Member_019fa90d-d68c-76f3-bbd6-471ed719868b" xlink:href="txn-20260930.xsd#txn_FixedOnePointNinePercentNotesDue2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedOnePointNinePercentNotesDue2031Member_019fa90d-d68c-76f3-bbd6-471ed719868b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedThreePointSixFivePercentNotesDue2032Member_019fa90d-d68c-7b06-bdb9-5d5f02e89528" xlink:href="txn-20260930.xsd#txn_FixedThreePointSixFivePercentNotesDue2032Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedThreePointSixFivePercentNotesDue2032Member_019fa90d-d68c-7b06-bdb9-5d5f02e89528" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFourPointNineZeroPercentNotesDue2033Member_019fa90d-d68c-716d-b688-27946d437857" xlink:href="txn-20260930.xsd#txn_FixedFourPointNineZeroPercentNotesDue2033Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFourPointNineZeroPercentNotesDue2033Member_019fa90d-d68c-716d-b688-27946d437857" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFourPointEightFivePercentNotesDueTwoThousandThirtyFourMember_019fa90d-d68c-74d2-b2df-7b63e65fe446" xlink:href="txn-20260930.xsd#txn_FixedFourPointEightFivePercentNotesDueTwoThousandThirtyFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFourPointEightFivePercentNotesDueTwoThousandThirtyFourMember_019fa90d-d68c-74d2-b2df-7b63e65fe446" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFivePointOneZeroPercentNotesDueTwoThousandThirtyFiveMember_019fa90d-d68c-7f8b-8009-9b392ee4c77c" xlink:href="txn-20260930.xsd#txn_FixedFivePointOneZeroPercentNotesDueTwoThousandThirtyFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFivePointOneZeroPercentNotesDueTwoThousandThirtyFiveMember_019fa90d-d68c-7f8b-8009-9b392ee4c77c" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedThreePointEightSevenFivePercentNotesDueTwoThousandAndThirtyNineMember_019fa90d-d68c-756d-959a-41c4f3daa16c" xlink:href="txn-20260930.xsd#txn_FixedThreePointEightSevenFivePercentNotesDueTwoThousandAndThirtyNineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedThreePointEightSevenFivePercentNotesDueTwoThousandAndThirtyNineMember_019fa90d-d68c-756d-959a-41c4f3daa16c" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFourPointOneFivePercentNotesDueTwoThousandAndFortyEightMember_019fa90d-d68c-70e9-b33f-ff12af552305" xlink:href="txn-20260930.xsd#txn_FixedFourPointOneFivePercentNotesDueTwoThousandAndFortyEightMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFourPointOneFivePercentNotesDueTwoThousandAndFortyEightMember_019fa90d-d68c-70e9-b33f-ff12af552305" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedTwoPointSevenPercentNotesDue2051Member_019fa90d-d68c-7947-bc65-e6c4ea6faf43" xlink:href="txn-20260930.xsd#txn_FixedTwoPointSevenPercentNotesDue2051Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedTwoPointSevenPercentNotesDue2051Member_019fa90d-d68c-7947-bc65-e6c4ea6faf43" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFourPointOnePercentNotesDue2052Member_019fa90d-d68c-7d53-ad36-59e77aef29ab" xlink:href="txn-20260930.xsd#txn_FixedFourPointOnePercentNotesDue2052Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFourPointOnePercentNotesDue2052Member_019fa90d-d68c-7d53-ad36-59e77aef29ab" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFivePointZeroZeroPercentNotesDue2053Member_019fa90d-d68c-78cb-8829-e26d87edc510" xlink:href="txn-20260930.xsd#txn_FixedFivePointZeroZeroPercentNotesDue2053Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFivePointZeroZeroPercentNotesDue2053Member_019fa90d-d68c-78cb-8829-e26d87edc510" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFivePointOneFivePercentNotesDueTwoThousandFiftyFourMember_019fa90d-d68c-759c-8ede-366f750426b5" xlink:href="txn-20260930.xsd#txn_FixedFivePointOneFivePercentNotesDueTwoThousandFiftyFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFivePointOneFivePercentNotesDueTwoThousandFiftyFourMember_019fa90d-d68c-759c-8ede-366f750426b5" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_FixedFivePointZeroFivePercentNotesDue2063Member_019fa90d-d68c-7fea-8d7b-912140e9e209" xlink:href="txn-20260930.xsd#txn_FixedFivePointZeroFivePercentNotesDue2063Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019fa90d-d68c-7d19-8e36-9a03e32591ab" xlink:to="loc_txn_FixedFivePointZeroFivePercentNotesDue2063Member_019fa90d-d68c-7fea-8d7b-912140e9e209" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019fa90d-d68c-7670-8ae0-ebcc173089fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7c97-b7ae-f391410ab356" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019fa90d-d68c-7670-8ae0-ebcc173089fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019fa90d-d68c-7b2d-a1de-3431185832af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7c97-b7ae-f391410ab356" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019fa90d-d68c-7b2d-a1de-3431185832af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019fa90d-d68c-710d-9736-1422ab541dc6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7c97-b7ae-f391410ab356" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019fa90d-d68c-710d-9736-1422ab541dc6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019fa90d-d68c-7780-8f5a-0c06d60cbeba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7c97-b7ae-f391410ab356" xlink:to="loc_us-gaap_LongTermDebt_019fa90d-d68c-7780-8f5a-0c06d60cbeba" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019fa90d-d68c-7ab1-9f70-59325374217a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7c97-b7ae-f391410ab356" xlink:to="loc_us-gaap_LongTermDebtCurrent_019fa90d-d68c-7ab1-9f70-59325374217a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019fa90d-d68c-7633-a05b-014da0924582" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019fa90d-d68c-7c97-b7ae-f391410ab356" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019fa90d-d68c-7633-a05b-014da0924582" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/StockholdersequityDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#StockholdersequityDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/StockholdersequityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_019fa90d-d68c-784c-b2b3-fc2ae28dab79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_019fa90d-d68c-7d94-a846-c01e6955aa9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_019fa90d-d68c-784c-b2b3-fc2ae28dab79" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_019fa90d-d68c-7d94-a846-c01e6955aa9c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-7d8d-8785-38bbec2516b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_019fa90d-d68c-7d94-a846-c01e6955aa9c" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-7d8d-8785-38bbec2516b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7d8d-8785-38bbec2516b9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-7d8d-8785-38bbec2516b9" xlink:to="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7d8d-8785-38bbec2516b9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7e63-a2dd-9fab66f5a0b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-7d8d-8785-38bbec2516b9" xlink:to="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7e63-a2dd-9fab66f5a0b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019fa90d-d68c-7102-a4bc-e1444455f16b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7e63-a2dd-9fab66f5a0b1" xlink:to="loc_us-gaap_CommonStockMember_019fa90d-d68c-7102-a4bc-e1444455f16b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019fa90d-d68c-7cf5-9e5c-680ab0c5ed29" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7e63-a2dd-9fab66f5a0b1" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019fa90d-d68c-7cf5-9e5c-680ab0c5ed29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019fa90d-d68c-79f3-8f43-88744c6b791a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7e63-a2dd-9fab66f5a0b1" xlink:to="loc_us-gaap_RetainedEarningsMember_019fa90d-d68c-79f3-8f43-88744c6b791a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_019fa90d-d68c-738f-b7d6-8ff15d8431bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7e63-a2dd-9fab66f5a0b1" xlink:to="loc_us-gaap_TreasuryStockCommonMember_019fa90d-d68c-738f-b7d6-8ff15d8431bc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019fa90d-d68c-7dfd-9052-f0058543cd12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7e63-a2dd-9fab66f5a0b1" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019fa90d-d68c-7dfd-9052-f0058543cd12" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_019fa90d-d68c-784c-b2b3-fc2ae28dab79" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019fa90d-d68c-7074-9cae-3a0bb6092dbe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:to="loc_us-gaap_StockholdersEquity_019fa90d-d68c-7074-9cae-3a0bb6092dbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019fa90d-d68c-74dc-91c0-c0c436850fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:to="loc_us-gaap_NetIncomeLoss_019fa90d-d68c-74dc-91c0-c0c436850fa0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_019fa90d-d68c-7a4e-b9cb-a3b46e464d03" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:to="loc_us-gaap_DividendsCommonStockCash_019fa90d-d68c-7a4e-b9cb-a3b46e464d03" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_019fa90d-d68c-71da-ad78-d809c6ee3ebe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_019fa90d-d68c-71da-ad78-d809c6ee3ebe" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019fa90d-d68c-7446-b50a-79cb66485bc9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019fa90d-d68c-7446-b50a-79cb66485bc9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019fa90d-d68c-71e2-b5dc-259a55ca0b60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019fa90d-d68c-71e2-b5dc-259a55ca0b60" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019fa90d-d68c-70c3-b464-b57e837bbee0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019fa90d-d68c-70c3-b464-b57e837bbee0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsShareBasedCompensationCash_019fa90d-d68c-79d4-b3a5-31892640f673" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsShareBasedCompensationCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:to="loc_us-gaap_DividendsShareBasedCompensationCash_019fa90d-d68c-79d4-b3a5-31892640f673" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityOther_019fa90d-d68c-7ca6-b87d-b045f25a4a73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019fa90d-d68c-7bb1-ba34-4e602ce99199" xlink:to="loc_us-gaap_StockholdersEquityOther_019fa90d-d68c-7ca6-b87d-b045f25a4a73" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019fa90d-d68c-7223-b00c-6b4358155108" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_019fa90d-d68c-78a8-bd45-2484306035f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_019fa90d-d68c-784c-b2b3-fc2ae28dab79" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_019fa90d-d68c-78a8-bd45-2484306035f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019fa90d-d68c-71bc-8935-05c2df6bb0fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockDividendsPerShareCashPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_019fa90d-d68c-784c-b2b3-fc2ae28dab79" xlink:to="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019fa90d-d68c-71bc-8935-05c2df6bb0fb" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/SupplementalfinancialinformationAcquisitionofSiliconLabsDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#SupplementalfinancialinformationAcquisitionofSiliconLabsDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/SupplementalfinancialinformationAcquisitionofSiliconLabsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_019fa90d-d68c-72fa-8dd4-56d72ae38b23" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionContingentConsiderationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_019fa90d-d68c-7966-b0f9-ee69cdc1ec9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_019fa90d-d68c-72fa-8dd4-56d72ae38b23" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_019fa90d-d68c-7966-b0f9-ee69cdc1ec9f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019fa90d-d68c-716f-a525-ef04fbfd4165" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_019fa90d-d68c-7966-b0f9-ee69cdc1ec9f" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019fa90d-d68c-716f-a525-ef04fbfd4165" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fa90d-d68c-716f-a525-ef04fbfd4165_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019fa90d-d68c-716f-a525-ef04fbfd4165" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fa90d-d68c-716f-a525-ef04fbfd4165_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fa90d-d68c-7566-95a5-2fb56f00ff12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019fa90d-d68c-716f-a525-ef04fbfd4165" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fa90d-d68c-7566-95a5-2fb56f00ff12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_SiliconLabsMember_019fa90d-d68c-74a9-992d-c9771b3ada78" xlink:href="txn-20260930.xsd#txn_SiliconLabsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fa90d-d68c-7566-95a5-2fb56f00ff12" xlink:to="loc_txn_SiliconLabsMember_019fa90d-d68c-74a9-992d-c9771b3ada78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_019fa90d-d68c-7cd3-b4ea-b65b4b50709b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_019fa90d-d68c-72fa-8dd4-56d72ae38b23" xlink:to="loc_us-gaap_BusinessAcquisitionSharePrice_019fa90d-d68c-7cd3-b4ea-b65b4b50709b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_txn_BusinessCombinationTargetCompanyEstimatedEnterpriseValue_019fa90d-d68c-7ec4-9957-c7782bca3e4a" xlink:href="txn-20260930.xsd#txn_BusinessCombinationTargetCompanyEstimatedEnterpriseValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_019fa90d-d68c-72fa-8dd4-56d72ae38b23" xlink:to="loc_txn_BusinessCombinationTargetCompanyEstimatedEnterpriseValue_019fa90d-d68c-7ec4-9957-c7782bca3e4a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019fa90d-d68c-72fe-848f-b211c7c655f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_019fa90d-d68c-72fa-8dd4-56d72ae38b23" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019fa90d-d68c-72fe-848f-b211c7c655f8" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/SupplementalfinancialinformationAmountsReclassifiedoutofAOCIDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#SupplementalfinancialinformationAmountsReclassifiedoutofAOCIDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/SupplementalfinancialinformationAmountsReclassifiedoutofAOCIDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019fa90d-d68c-77a2-8fc2-d8ce6103d04d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019fa90d-d68c-700f-b531-b8a3656115da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019fa90d-d68c-77a2-8fc2-d8ce6103d04d" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019fa90d-d68c-700f-b531-b8a3656115da" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019fa90d-d68c-7936-9c8e-f28e9f7e6a68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019fa90d-d68c-700f-b531-b8a3656115da" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019fa90d-d68c-7936-9c8e-f28e9f7e6a68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019fa90d-d68c-7936-9c8e-f28e9f7e6a68_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019fa90d-d68c-7936-9c8e-f28e9f7e6a68" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019fa90d-d68c-7936-9c8e-f28e9f7e6a68_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019fa90d-d68c-7ea4-af6f-ab5cab1697ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_019fa90d-d68c-7936-9c8e-f28e9f7e6a68" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019fa90d-d68c-7ea4-af6f-ab5cab1697ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_019fa90d-d68c-7241-8cf4-57155d070961" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_019fa90d-d68c-7ea4-af6f-ab5cab1697ed" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_019fa90d-d68c-7241-8cf4-57155d070961" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-7e3b-a4ac-2686eea2eb47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_019fa90d-d68c-700f-b531-b8a3656115da" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-7e3b-a4ac-2686eea2eb47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7e3b-a4ac-2686eea2eb47_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-7e3b-a4ac-2686eea2eb47" xlink:to="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7e3b-a4ac-2686eea2eb47_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7d63-a554-09dbb89cce61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-7e3b-a4ac-2686eea2eb47" xlink:to="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7d63-a554-09dbb89cce61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_019fa90d-d68c-787b-a66d-ab2eff28ffed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7d63-a554-09dbb89cce61" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_019fa90d-d68c-787b-a66d-ab2eff28ffed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_019fa90d-d68c-7fcf-b0ba-dab9eec1c141" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-7d63-a554-09dbb89cce61" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_019fa90d-d68c-7fcf-b0ba-dab9eec1c141" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019fa90d-d68c-7992-89f9-311407c97092" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019fa90d-d68c-77a2-8fc2-d8ce6103d04d" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019fa90d-d68c-7992-89f9-311407c97092" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019fa90d-d68c-7b77-bdfc-8a88cb294630" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019fa90d-d68c-77a2-8fc2-d8ce6103d04d" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019fa90d-d68c-7b77-bdfc-8a88cb294630" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019fa90d-d68c-7068-996d-870256f88a1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_019fa90d-d68c-77a2-8fc2-d8ce6103d04d" xlink:to="loc_us-gaap_NetIncomeLoss_019fa90d-d68c-7068-996d-870256f88a1f" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.ti.com/role/SupplementalfinancialinformationTreasuryStockDetails" xlink:type="simple" xlink:href="txn-20260930.xsd#SupplementalfinancialinformationTreasuryStockDetails"/>
  <link:definitionLink xlink:role="http://www.ti.com/role/SupplementalfinancialinformationTreasuryStockDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_019fa90d-d68c-7a50-8a7f-30bbd5641847" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_019fa90d-d68c-7a51-a13c-0b4cd3a6ab21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_019fa90d-d68c-7a50-8a7f-30bbd5641847" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_019fa90d-d68c-7a51-a13c-0b4cd3a6ab21" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-772a-b375-8459892b63a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_019fa90d-d68c-7a51-a13c-0b4cd3a6ab21" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-772a-b375-8459892b63a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-772a-b375-8459892b63a2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-772a-b375-8459892b63a2" xlink:to="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-772a-b375-8459892b63a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-75f3-8745-c1c4d4b0d5d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019fa90d-d68c-772a-b375-8459892b63a2" xlink:to="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-75f3-8745-c1c4d4b0d5d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_019fa90d-d68c-725f-99cf-aa8d35fee8ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019fa90d-d68c-75f3-8745-c1c4d4b0d5d2" xlink:to="loc_us-gaap_TreasuryStockCommonMember_019fa90d-d68c-725f-99cf-aa8d35fee8ad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019fa90d-d68c-7cdd-b0a4-3e461a8e0794" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInTemporaryEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_019fa90d-d68c-7a50-8a7f-30bbd5641847" xlink:to="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019fa90d-d68c-7cdd-b0a4-3e461a8e0794" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_019fa90d-d68c-77f7-a0ed-f5c75b8b9b50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019fa90d-d68c-7cdd-b0a4-3e461a8e0794" xlink:to="loc_us-gaap_TreasuryStockCommonShares_019fa90d-d68c-77f7-a0ed-f5c75b8b9b50" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_019fa90d-d68c-7150-8efd-8f9a8cb5aea6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019fa90d-d68c-7cdd-b0a4-3e461a8e0794" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_019fa90d-d68c-7150-8efd-8f9a8cb5aea6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019fa90d-d68c-7540-9b2c-23ffbe40e9f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInTemporaryEquityRollForward_019fa90d-d68c-7cdd-b0a4-3e461a8e0794" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_019fa90d-d68c-7540-9b2c-23ffbe40e9f6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_019fa90d-d68c-7d83-b2ed-65741b2b2559" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
  </link:definitionLink>
</link:linkbase>
