Product Sample & Technical Tools & Support & Folder Buy Documents Software Community SN54AHCT126,SN74AHCT126 SCLS265P–DECEMBER1995–REVISEDAUGUST2014 SNx4AHCT126 Quadruple Bus Buffer Gates With 3-State Outputs 1 Features 3 Description • InputsAreTTL-VoltageCompatible The SNxAHCT126 devices are quadruple-bus buffer 1 gates featuring independent line drivers with 3-state • Latch-UpPerformanceExceeds250mAPer outputs. JESD17 • ESDProtectionExceedsJESD22 DeviceInformation(1) – 2000-VHuman-BodyModel(A114-A) PARTNUMBER PACKAGE BODYSIZE(NOM) – 200-VMachineModel(A115-A) SOIC(14) 8.65mm×3.91mm • OnProductsComplianttoMIL-PRF-38535, SSOP(14) 6.20mm×5.30mm AllParametersAreTestedUnlessOtherwise TVSOP(14) 3.60mm×4.40mm SNx4AHCT126 Noted.OnAllOtherProducts,Production PDIP(14) 3.90mm×6.35mm ProcessingDoesNotNecessarilyIncludeTesting SOP(14) 10.30mm×5.30mm ofAllParameters. TSSOP(14) 5.00mm×4.40mm (1) For all available packages, see the orderable addendum at 2 Applications theendofthedatasheet. • Servers • PCsandNotebooks • NetworkSwitches • WearableHealthandFitnessDevices • TelecomInfrastructures • ElectronicPointsofSale 4 Simplified Schematic 1OE 3OE 1A 1Y 3A 3Y 2OE 4OE 2A 2Y 4A 4Y 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

SN54AHCT126,SN74AHCT126 SCLS265P–DECEMBER1995–REVISEDAUGUST2014 www.ti.com Table of Contents 1 Features.................................................................. 1 9.1 Overview...................................................................8 2 Applications........................................................... 1 9.2 FunctionalBlockDiagram.........................................8 3 Description............................................................. 1 9.3 FeatureDescription...................................................8 9.4 DeviceFunctionalModes..........................................8 4 SimplifiedSchematic............................................. 1 10 ApplicationandImplementation.......................... 9 5 RevisionHistory..................................................... 2 10.1 ApplicationInformation............................................9 6 PinConfigurationandFunctions......................... 3 10.2 TypicalApplication .................................................9 7 Specifications......................................................... 4 11 PowerSupplyRecommendations..................... 10 7.1 AbsoluteMaximumRatings......................................4 12 Layout................................................................... 10 7.2 HandlingRatings.......................................................4 12.1 LayoutGuidelines.................................................10 7.3 RecommendedOperatingConditions.......................4 12.2 LayoutExample....................................................10 7.4 ThermalInformation..................................................5 13 DeviceandDocumentationSupport................. 11 7.5 ElectricalCharacteristics...........................................5 7.6 SwitchingCharacteristics,V =5V±0.5V ..........6 13.1 RelatedLinks........................................................11 CC 7.7 NoiseCharacteristics................................................6 13.2 Trademarks...........................................................11 7.8 OperatingCharacteristics..........................................6 13.3 ElectrostaticDischargeCaution............................11 7.9 TypicalCharacteristics..............................................6 13.4 Glossary................................................................11 8 ParameterMeasurementInformation..................7 14 Mechanical,Packaging,andOrderable Information........................................................... 11 9 DetailedDescription.............................................. 8 5 Revision History ChangesfromRevisionO(July2003)toRevisionP Page • UpdateddocumenttonewTIdatasheetstandards.............................................................................................................. 1 • DeletedOrderingInformationTable....................................................................................................................................... 1 • AddedMilitaryDisclaimertoFeatureslist.............................................................................................................................. 1 • AddedApplications................................................................................................................................................................. 1 • AddedPinFunctionstable...................................................................................................................................................... 3 • AddedHandlingRatingstable................................................................................................................................................ 4 • ChangedMAXoperatingtemperatureto125°CinRecommendedOperatingConditionstable. ......................................... 4 • AddedThermalInformationtable........................................................................................................................................... 5 • Added–40°Cto125°CforSN74AHCT126inElectricalCharacteristicstable....................................................................... 5 • Added–40°Cto125°CforSN74AHCT126intheSwitchingCharacteristicstable................................................................ 6 • AddedTypicalCharacteristics................................................................................................................................................ 6 • AddedDetailedDescriptionsection....................................................................................................................................... 8 • AddedApplicationandImplementationsection...................................................................................................................... 9 • AddedPowerSupplyRecommendationsandLayoutsections............................................................................................ 10 2 SubmitDocumentationFeedback Copyright©1995–2014,TexasInstrumentsIncorporated ProductFolderLinks:SN54AHCT126 SN74AHCT126

SN54AHCT126,SN74AHCT126 www.ti.com SCLS265P–DECEMBER1995–REVISEDAUGUST2014 6 Pin Configuration and Functions SN54AHCT126...JORWPACKAGE SN54AHCT126...FKPACKAGE SN74AHCT126...D,DB,DGV,N,NS,ORPWPACKAGE (TOPVIEW) (TOPVIEW) E CE A O C CO 1 1 N V 4 1OE 1 14 VCC 1A 2 13 4OE 1Y 4 3 2 1 20 1918 4A 1Y 3 12 4A NC 5 17 NC 2OE 4 11 4Y 2OE 6 16 4Y 2A 5 10 3OE NC 7 15 NC 2Y 6 9 3A 2A 8 14 3OE GND 7 8 3Y 9 10 1112 13 YD CY A 2N N3 3 G NC–Nointernalconnection PinFunctions PIN SN74AHCT126 SN54AHCT126 I/O DESCRIPTION NAME D,DB,DGV, J,W FK N,NS,PW 1A 2 2 3 I 1AInput 1OE 1 1 2 I OutputEnable1 1Y 3 3 4 O 1YOutput 2A 5 5 8 I 2AInput 2OE 4 4 6 I OutputEnable2 2Y 6 6 9 O 2YOutput 3A 9 9 13 I 3AInput 3OE 10 10 14 I OutputEnable3 3Y 8 8 12 O 3YOutput 4A 12 12 18 I 4AInput 4OE 13 13 19 I OutputEnable4 4Y 11 11 16 O 4YOutput GND 7 7 10 — GroundPin 1 5 7 NC — — NoConnection 11 15 17 V 14 14 20 — PowerPin CC Copyright©1995–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:SN54AHCT126 SN74AHCT126

SN54AHCT126,SN74AHCT126 SCLS265P–DECEMBER1995–REVISEDAUGUST2014 www.ti.com 7 Specifications 7.1 Absolute Maximum Ratings overoperatingfree-airtemperaturerange(unlessotherwisenoted)(1) MIN MAX UNIT V Supplyvoltagerange –0.5 7 V CC V Inputvoltagerange(2) –0.5 7 V I V Outputvoltagerange(2) –0.5 V +0.5 V O CC I Inputclampcurrent V <0 –20 mA IK I I Outputclampcurrent V <0orV >V ±20 mA OK O O CC I Continuousoutputcurrent V =0toV ±25 mA O O CC ContinuouscurrentthroughV orGND ±50 mA CC (1) StressesbeyondthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Thesearestressratings only,whichdonotimplyfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderRecommended OperatingConditions.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability. (2) Theinputandoutputvoltageratingsmaybeexceedediftheinputandoutputcurrentratingsareobserved. 7.2 Handling Ratings MIN MAX UNIT T Storagetemperaturerange –65 150 °C stg Humanbodymodel(HBM),perANSI/ESDA/JEDECJS-001,all V(ESD) Electrostaticdischarge pins(1) 0 2000 V (1) JEDECdocumentJEP155statesthat500-VHBMallowssafemanufacturingwithastandardESDcontrolprocess. 7.3 Recommended Operating Conditions overoperatingfree-airtemperaturerange(unlessotherwisenoted)(1) SN54AHCT126(2) SN74AHCT126 UNIT MIN MAX MIN MAX V Supplyvoltage 4.5 5.5 4.5 5.5 V CC V High-levelinputvoltage 2 2 V IH V Low-levelinputvoltage 0.8 0.8 V IL V Inputvoltage 0 5.5 0 5.5 V I V Outputvoltage 0 V 0 V V O CC CC I High-leveloutputcurrent –8 –8 mA OH I Low-leveloutputcurrent 8 8 mA OL Δt/Δv Inputtransitionriseorfallrate 20 20 ns/V T Operatingfree-airtemperature –55 125 –40 125 °C A (1) AllunusedinputsofthedevicemustbeheldatV orGNDtoensureproperdeviceoperation.RefertotheTIApplicationReport, CC ImplicationsofSloworFloatingCMOSInputs(SCBA004). (2) ProductPreview. 4 SubmitDocumentationFeedback Copyright©1995–2014,TexasInstrumentsIncorporated ProductFolderLinks:SN54AHCT126 SN74AHCT126

SN54AHCT126,SN74AHCT126 www.ti.com SCLS265P–DECEMBER1995–REVISEDAUGUST2014 7.4 Thermal Information SN74AHCT126 THERMALMETRIC(1) D DB DGV N NS PW UNIT 14PINS R Junction-to-ambientthermalresistance 90.6 107.1 129.0 57.4 90.7 122.6 θJA R Junction-to-case(top)thermalresistance 50.9 59.6 52.1 44.9 48.3 51.4 θJC(top) R Junction-to-boardthermalresistance 44.8 54.4 62.0 37.2 49.4 64.4 θJB °C/W ψ Junction-to-topcharacterizationparameter 14.7 20.5 6.5 30.1 14.6 6.7 JT ψ Junction-to-boardcharacterizationparameter 44.5 53.8 61.3 37.1 49.1 63.8 JB R Junction-to-case(bottom)thermalresistance n/a n/a n/a n/a n/a n/a θJC(bot) (1) Formoreinformationabouttraditionalandnewthermalmetrics,seetheICPackageThermalMetricsapplicationreport(SPRA953). 7.5 Electrical Characteristics overrecommendedoperatingfree-airtemperaturerange(unlessotherwisenoted) SN74AHCT126 PARAMETER TESTCONDITIONS VCC TA=25°C SN54AHCT126 SN74AHCT126 –40to125°C UNIT MIN TYP MAX MIN MAX MIN MAX MIN MAX IOH=–50µA 4.4 4.5 4.4 4.4 4.4 VOH 4.5V V IOH=–8mA 3.94 3.8 3.8 3.8 IOL=50µA 0.1 0.1 0.1 0.1 VOL 4.5V V IOL=8mA 0.36 0.44 0.44 0.44 II VI=5.5VorGND 05.V5tVo ±0.1 ±1(1) ±1 ±1 µA IOZ VO=VCCorGND 5.5V ±0.25 ±2.5 ±2.5 ±2.5 µA ICC VGIN=DVCCor IO=0 5.5V 2 20 20 20 µA Oneinputat3.4V, ΔICC(2) OtherinputsatVCCor 5.5V 1.35 1.5 1.5 1.5 mA GND Ci VI=VCCorGND 5V 4 10 10 pF Co VO=VCCorGND 5V 15 pF (1) OnproductscomplianttoMIL-PRF-38535,thisparameterisnotproductiontestedatV =0V. CC (2) ThisistheincreaseinsupplycurrentforeachinputatoneofthespecifiedTTLvoltagelevels,ratherthan0VorV . CC Copyright©1995–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:SN54AHCT126 SN74AHCT126

SN54AHCT126,SN74AHCT126 SCLS265P–DECEMBER1995–REVISEDAUGUST2014 www.ti.com 7.6 Switching Characteristics, V = 5 V ± 0.5 V CC overrecommendedoperatingfree-airtemperaturerange(unlessotherwisenoted)(seeFigure2) SN54AHCT126 SN74AHCT126 SN74AHCT126 PARAMETER FROM TO LOAD TA=25°C –55°Cto125°C –40°Cto85°C –40°Cto125°C UNIT (OUTPUT) (INPUT) CAPACITANCE MIN TYP MAX MIN MAX MIN MAX MIN MAX ttPPLHHL A Y CL=15pF 33..88((11)) 55..55((11)) 11((11)) 66..55((11)) 11 66..55 11 77 ns ttPPZZHL OE Y CL=15pF 33..66((11)) 55..11((11)) 11((11)) 66((11)) 11 66 11 66..55 ns ttPPHLZZ OE Y CL=15pF 44..66((11)) 66..88((11)) 11((11)) 88((11)) 11 88 11 88..55 ns ttPPLHHL A Y CL=50pF 55..33 77..55 11 88..55 11 88..55 11 99..55 ns ttPPZZHL OE Y CL=50pF 55..11 77..11 11 88 11 88 11 99 ns ttPPHLZZ OE Y CL=50pF 66..11 88..88 11 1100 11 1100 11 1111 ns tsk(o) CL=50pF 1(2) 1 1 ns (1) OnproductscomplianttoMIL-PRF-38535,thisparameterisnotproductiontested. (2) OnproductscomplianttoMIL-PRF-38535,thisparameterdoesnotapply. 7.7 Noise Characteristics V =5V,C =50pF,T =25°C(1) CC L A SN74AHCT126 PARAMETER UNIT MIN MAX V Quietoutput,maximumdynamicV 0.8 V OL(P) OL V Quietoutput,minimumdynamicV –0.8 V OL(V) OL V Quietoutput,minimumdynamicV 4.4 V OH(V) OH V High-leveldynamicinputvoltage 2 V IH(D) V Low-leveldynamicinputvoltage 0.8 V IL(D) (1) Characteristicsareforsurface-mountpackagesonly. 7.8 Operating Characteristics V =5V,T =25°C CC A PARAMETER TESTCONDITIONS TYP UNIT C Powerdissipationcapacitance Noload, f=1MHz 14 pF pd 7.9 Typical Characteristics 5 4 s) 3 n D ( P T 2 1 TPD in ns 0 -100 -50 0 50 100 150 Temperature (qC) D001 Figure1.TPDvsTemperature 6 SubmitDocumentationFeedback Copyright©1995–2014,TexasInstrumentsIncorporated ProductFolderLinks:SN54AHCT126 SN74AHCT126

SN54AHCT126,SN74AHCT126 www.ti.com SCLS265P–DECEMBER1995–REVISEDAUGUST2014 8 Parameter Measurement Information VCC FromOutput Test FromOutput RL=1kΩ S1 Open TEST S1 UnderTest Point UnderTest GND tPLH/tPHL Open CL CL tPLZ/tPZL VCC (seeNoteA) (seeNoteA) tPHZ/tPZH GND OpenDrain VCC LOADCIRCUITFOR LOADCIRCUITFOR TOTEM-POLEOUTPUTS 3-STATEANDOPEN-DRAINOUTPUTS 3V TimingInput 1.5V tw 0V th 3V tsu 3V Input 1.5V 1.5V DataInput 1.5V 1.5V 0V 0V VOLTAGEWAVEFORMS VOLTAGEWAVEFORMS PULSEDURATION SETUPANDHOLDTIMES 3V 3V Output Input 1.5V 1.5V 1.5V 1.5V Control 0V 0V tPLH tPHL tPZL tPLZ Output VOH Waveform1 ≈VCC InO-Puhtapsuet 50%VCC 50%VCC S1atVCC 50%VCC VOL+0.3V VOL (seeNoteB) VOL tPHL tPLH tPZH tPHZ Output Out-ofO-Puhtapsuet 50%VCC 50%VCVVCOOHL (WseSae1veNaftooGtremNBD2) 50%VCC VOH–0.3VV≈0OVH VOLTAGEWAVEFORMS VOLTAGEWAVEFORMS PROPAGATIONDELAYTIMES ENABLEANDDISABLETIMES INVERTINGANDNONINVERTINGOUTPUTS LOW-ANDHIGH-LEVELENABLING NOTES: A. CLincludesprobeandjigcapacitance. B. Waveform1isforanoutputwithinternalconditionssuchthattheoutputislowexceptwhendisabledbytheoutputcontrol. Waveform2isforanoutputwithinternalconditionssuchthattheoutputishighexceptwhendisabledbytheoutputcontrol. C. Allinputpulsesaresuppliedbygeneratorshavingthefollowingcharacteristics: PRR≤1MHz,ZO=50Ω,tr≤3ns,tf≤3ns. D. Theoutputsaremeasuredoneatatimewithoneinputtransitionpermeasurement. E. Allparametersandwaveformsarenotapplicabletoalldevices. Figure2. LoadCircuitandVoltageandWaveforms Copyright©1995–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:SN54AHCT126 SN74AHCT126

SN54AHCT126,SN74AHCT126 SCLS265P–DECEMBER1995–REVISEDAUGUST2014 www.ti.com 9 Detailed Description 9.1 Overview The SNxAHCT126 devices are quadruple-bus buffer gates featuring independent line drivers with 3-state outputs. Each output is disabled when the associated output-enable (OE) input is low. When OE is high, the respective gate passes the data from the A input to its Y output. To ensure the high-impedance state during power up or power down, OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determinedbythecurrent-sourcingcapabilityofthedriver. 9.2 Functional Block Diagram 1OE 3OE 1A 1Y 3A 3Y 2OE 4OE 2A 2Y 4A 4Y 9.3 Feature Description • TTLinputs – Loweredswitchingthresholdallowsuptranslationfrom3.3Vto5V • Slowedgesreduceoutputringing 9.4 Device Functional Modes Table1.FunctionTable (EachBuffer) INPUTS OUTPUT OE A Y H H H H L L L X Z 8 SubmitDocumentationFeedback Copyright©1995–2014,TexasInstrumentsIncorporated ProductFolderLinks:SN54AHCT126 SN74AHCT126

SN54AHCT126,SN74AHCT126 www.ti.com SCLS265P–DECEMBER1995–REVISEDAUGUST2014 10 Application and Implementation 10.1 Application Information The SNx4AHCT126 is a low-drive CMOS device that can be used for a multitude of bus interface type applications where output ringing is a concern. The low drive and slow edge rates will minimize overshoot and undershoot on the outputs. The input switching levels have been lowered to accommodate TTL inputs of 0.8-V V and 2-V V . This feature makes it ideal for translating up from 3.3 V to 5 V. Figure 4 shows this type of IL IH translation. 10.2 Typical Application Regulated 5 V Regulated 3.3 V VCC 1OE 4OE 1A 1Y µC or 5 V µC System Logic System Logic 4A 4Y LEDs GND Figure3. TypicalApplicationSchematic 10.2.1 DesignRequirements This device uses CMOS technology and has balanced output drive. Care should be taken to avoid bus contention because it can drive currents that would exceed maximum limits. The high drive will also create fast edgesintolightloads;therefore,routingandloadconditionsshouldbeconsideredtopreventringing. 10.2.2 DetailedDesignProcedure 1. Recommendedinputconditions – Risetimeandfalltimespecs:See(Δt/ΔV)intheRecommendedOperatingConditionstable. – SpecifiedHighandlowlevels:See(V andV )intheRecommendedOperatingConditions table. IH IL – Inputsareovervoltagetolerantallowingthemtogoashighas5.5VatanyvalidV CC 2. Recommendoutputconditions – Loadcurrentsshouldnotexceed25mAperoutputand50mAtotalforthepart – OutputsshouldnotbepulledaboveV CC Copyright©1995–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:SN54AHCT126 SN74AHCT126

SN54AHCT126,SN74AHCT126 SCLS265P–DECEMBER1995–REVISEDAUGUST2014 www.ti.com Typical Application (continued) 10.2.3 ApplicationCurves Figure4.UpTranslation 11 Power Supply Recommendations The power supply can be any voltage between the MIN and MAX supply voltage rating located in the RecommendedOperatingConditionstable. Each V pin should have a good bypass capacitor to prevent power disturbance. For devices with a single CC supply, 0.1 μF is recommended. If there are multiple V pins, 0.01 μF or 0.022 μF is recommended for each CC powerpin.Itisacceptabletoparallelmultiplebypasscapstorejectdifferentfrequenciesofnoise.A0.1 μFand1 μF are commonly used in parallel. The bypass capacitor should be installed as close to the power pin as possibleforbestresults. 12 Layout 12.1 Layout Guidelines Whenusingmultiplebitlogicdevicesinputsshouldnoteverfloat. In many cases, functions or parts of functions of digital logic devices are unused, for example, when only two inputs of a triple-input AND gate are used or only 3 of the 4 buffer gates are used. Such input pins should not be left unconnected because the undefined voltages at the outside connections result in undefined operational states. Specified in Figure 5 are the rules that must be observed under all circumstances. All unused inputs of digital logic devices must be connected to a high or low bias to prevent them from floating. The logic level that should be applied to any particular unused input depends on the function of the device. Generally they will be tied to GND or V ; whichever makes more sense or is more convenient. It is generally acceptable to float CC outputs unless the part is a transceiver. If the transceiver has an output enable pin, it will disable the outputs section of the part when asserted. This will not disable the input section of the IO’s so they cannot float when disabled. 12.2 Layout Example V cc Input Unused Input Output Unused Input Output Input Figure5. LayoutDiagram 10 SubmitDocumentationFeedback Copyright©1995–2014,TexasInstrumentsIncorporated ProductFolderLinks:SN54AHCT126 SN74AHCT126

SN54AHCT126,SN74AHCT126 www.ti.com SCLS265P–DECEMBER1995–REVISEDAUGUST2014 13 Device and Documentation Support 13.1 Related Links The table below lists quick access links. Categories include technical documents, support and community resources,toolsandsoftware,andquickaccesstosampleorbuy. Table2.RelatedLinks TECHNICAL TOOLS& SUPPORT& PARTS PRODUCTFOLDER SAMPLE&BUY DOCUMENTS SOFTWARE COMMUNITY SN54AHCT126 Clickhere Clickhere Clickhere Clickhere Clickhere SN74AHCT126 Clickhere Clickhere Clickhere Clickhere Clickhere 13.2 Trademarks Alltrademarksarethepropertyoftheirrespectiveowners. 13.3 Electrostatic Discharge Caution Thesedeviceshavelimitedbuilt-inESDprotection.Theleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates. 13.4 Glossary SLYZ022—TIGlossary. Thisglossarylistsandexplainsterms,acronyms,anddefinitions. 14 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of thisdocument.Forbrowser-basedversionsofthisdatasheet,refertotheleft-handnavigation. Copyright©1995–2014,TexasInstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLinks:SN54AHCT126 SN74AHCT126

PACKAGE OPTION ADDENDUM www.ti.com 24-Aug-2018 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) 5962-9686301QDA ACTIVE CFP W 14 1 TBD A42 N / A for Pkg Type -55 to 125 5962-9686301QD A SNJ54AHCT126W SN74AHCT126D ACTIVE SOIC D 14 50 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 85 AHCT126 & no Sb/Br) SN74AHCT126DBR ACTIVE SSOP DB 14 2000 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 HB126 & no Sb/Br) SN74AHCT126DG4 ACTIVE SOIC D 14 50 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 AHCT126 & no Sb/Br) SN74AHCT126DGVR ACTIVE TVSOP DGV 14 2000 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 HB126 & no Sb/Br) SN74AHCT126DR ACTIVE SOIC D 14 2500 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 AHCT126 & no Sb/Br) SN74AHCT126N ACTIVE PDIP N 14 25 Green (RoHS CU NIPDAU N / A for Pkg Type -40 to 125 SN74AHCT126N & no Sb/Br) SN74AHCT126NSR ACTIVE SO NS 14 2000 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 AHCT126 & no Sb/Br) SN74AHCT126PW ACTIVE TSSOP PW 14 90 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 HB126 & no Sb/Br) SN74AHCT126PWR ACTIVE TSSOP PW 14 2000 Green (RoHS CU NIPDAU Level-1-260C-UNLIM -40 to 125 HB126 & no Sb/Br) SNJ54AHCT126W ACTIVE CFP W 14 1 TBD A42 N / A for Pkg Type -55 to 125 5962-9686301QD A SNJ54AHCT126W (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 24-Aug-2018 Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF SN54AHCT126, SN74AHCT126 : •Catalog: SN74AHCT126 •Automotive: SN74AHCT126-Q1, SN74AHCT126-Q1 •Enhanced Product: SN74AHCT126-EP, SN74AHCT126-EP •Military: SN54AHCT126 NOTE: Qualified Version Definitions: •Catalog - TI's standard catalog product •Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects •Enhanced Product - Supports Defense, Aerospace and Medical Applications Addendum-Page 2

PACKAGE OPTION ADDENDUM www.ti.com 24-Aug-2018 •Military - QML certified for Military and Defense Applications Addendum-Page 3

PACKAGE MATERIALS INFORMATION www.ti.com 20-Dec-2018 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) SN74AHCT126DGVR TVSOP DGV 14 2000 330.0 12.4 6.8 4.0 1.6 8.0 12.0 Q1 SN74AHCT126DR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 SN74AHCT126PWR TSSOP PW 14 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 20-Dec-2018 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) SN74AHCT126DGVR TVSOP DGV 14 2000 367.0 367.0 35.0 SN74AHCT126DR SOIC D 14 2500 367.0 367.0 38.0 SN74AHCT126PWR TSSOP PW 14 2000 367.0 367.0 35.0 PackMaterials-Page2

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MECHANICAL DATA MPDS006C – FEBRUARY 1996 – REVISED AUGUST 2000 DGV (R-PDSO-G**) PLASTIC SMALL-OUTLINE 24 PINS SHOWN 0,23 0,40 0,07 M 0,13 24 13 0,16 NOM 4,50 6,60 4,30 6,20 Gage Plane 0,25 0°–(cid:1)8° 0,75 1 12 0,50 A Seating Plane 0,15 1,20 MAX 0,08 0,05 PINS ** 14 16 20 24 38 48 56 DIM A MAX 3,70 3,70 5,10 5,10 7,90 9,80 11,40 A MIN 3,50 3,50 4,90 4,90 7,70 9,60 11,20 4073251/E 08/00 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion, not to exceed 0,15 per side. D. Falls within JEDEC: 24/48 Pins – MO-153 14/16/20/56 Pins – MO-194 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265

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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,65 0,15 M 0,22 28 15 0,25 0,09 5,60 8,20 5,00 7,40 Gage Plane 1 14 0,25 A 0°–(cid:1)8° 0,95 0,55 Seating Plane 2,00 MAX 0,05 MIN 0,10 PINS ** 14 16 20 24 28 30 38 DIM A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 4040065/E 12/01 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion not to exceed 0,15. D. Falls within JEDEC MO-150 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265

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