SCLS131E –DECEMBER 1982–REVISED SEPTEMBER …

1 DIROEA1B1121819To Seven Other ChannelsProductFolderSample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunitySN54HC245,SN74HC245 SCLS131E DECEMBER1982 REVISEDSEPTEMBER2015 SNx4HC245 Octal Bus TransceiversWith 3-StateOutputs1 Features3 DescriptionTheseoctalbustransceiversared esignedfor1 WideOperatingVoltageRangeof 2 V to 6 Vasynchronoustwo-waycommunicationbetween data High-Current3-StateOutputsDriveBus control-functionimplementationminimizesD irectlyor Up to 15 LSTTLL oadsexternaltimingrequirements. Low PowerConsumption,80- A Max ICCThe devicesallowdatatransmissionfromthe A bus Typicaltpd= 12 nsto the B busor fromthe B busto the A bus, 6-mAOutputDriveat 5 Vdependingon the logiclevelat the direction-control(DIR) (OE)inputcan be Low InputCurrentof 1 A Maxusedto disablethe deviceso thatthe busesare On ProductsCompliantto MIL-PRF-38535, ParametersAre All OtherProducts,ProductionDeviceInformatio nProcessingDoesNot NecessarilyIncludeTestingPARTNUMBERPACKA GEBODYSIZE(NOM)of All (20) (20) ApplicationsSNx4HC245 PDIP(20) ServersSOP(20) PCs and NotebooksTSSOP(20) NetworkSwitches(1) For all availablepackages,see the orderableaddendumatthe end of the datasheet.

2 WearableHealthand FitnessDevices TelecomInfrastructures ElectronicPointsof SaleLogicDiagram(PositiveLogic)1An IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand ,SN74HC245 SCLS131E DECEMBER1982 Applicationand Pin Configurationand Deviceand ,CL= 50 pF .. ,CL= 150 pF .. Mechanical,Packaging,and Orderable8 RevisionHistoryNOTE:Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (August2003)to RevisionEPage AddedDeviceComparisonsection,ThermalInfo rmationsection,ESDR atingssection,ApplicationandImplementati onsection,PowerSupplyRecommendationssect ion, AddedMilitaryDisclaimerto Featureslist..1 UpdatedFK 1982 2015,TexasInstrumentsIncorporatedProduct FolderLinks:SN54HC245SN74HC2451234567891 020191817161514131211 DIRA1A2A3A4A5A6A7A8 GNDVCCOEB1B2B3B4B5B6B7B83 2 1 20 199 10 11 12 13456781817161514B1B2B3B4B5A3A4A5A6A7A2A 1 DIRB7B6 OEA8 GNDB8 VCCSN54HC245, DECEMBER1982 REVISEDSEPTEMBER20155 Pin Configurationand FunctionsFK Package20-PinLCCCDB, DGV,DW,N, J, W, or PW PackageTop View20-PinSSOP,TVSOP,SOIC,PDIPCDIP,CFP,o r TSSOPTop ViewPin Input/Output3A2I/OA2 Input/Output4A3I/OA3 Input/Output5A4I/OA4 Input/Output6A5I/OA5 Input/Output7A6I/OA6 Input/Output8A7I/OA7 Input/Output9A8I/OA8 Input/Output10 GND GroundPin11B8I/OB8 Input/Output12B7I/OB7 Input/Output13B6I/OB6 Input/Output14B5I/OB5 Input/Output15B4I/OB4 Input/Output16B3I/OB3 Input/Output17B2I/OB2 Input/Output18B1I/OB1 Input/Output19 OEI/OOutputEnable20 VCC PowerPinCopyright 1982 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback3 ProductFolderLinks.

3 SN54HC245SN74HC245SN54HC245,SN74HC245 SCLS131E DECEMBER1982 (unlessotherwisenoted)(1)MINMAXUNITVCCS upplyvoltage (2)VI< 0 or VI> VCC 20mAIOKO utputclampcurrent(2)VO< 0 or VO> VCC 20mAIOC ontinuousoutputcurrentVO= 0 to VCC 35mAContinuouscurrentthroughVCCor GND 70mATstgStoragetemperature 65150 C(1)StressesbeyondthoselistedunderAbsolu teMaximumRatingsmay causepermanentdamageto the stressratingsonly,and functionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditionsis not absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.(2)The inputand outputvoltageratingsmay be exceededif the inputand outputcurrentratingsare (HBM),per ANSI/ESDA/JEDECJS-001(1) 3000V(ESD)ElectrostaticdischargeVCharged -devicemodel(CDM),per JEDEC specificationJESD22- 1000C101(2)(1)JEDEC documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a standardESDcontrolprocess.(2)JEDEC documentJEP157statesthat 250-VCDM allowssafe manufacturingwith a (unlessotherwisenoted)(1)SN54HC245SN74HC 245 UNITMINNOMMAXMINNOMMAXVCCS upplyvoltage256256 VVCC= 2 6 2 6 2 V10001000 t/ vInputtransitionrise and fall timeVCC= V500500nsVCC= 6 V400400 TAOperatingfree-airtemperature 55125 4085 C(1)All unusedinputsof the devicemustbe held at VCCor GNDto the TI applicationreport,ImplicationsofSloworFl oatingCMOSI nputs, 1982 2015,TexasInstrumentsIncorporatedProduct FolderLinks.

4 SN54HC245SN74HC245SN54HC245, DECEMBER1982 (1)UNIT(SSOP)(SOIC)(PDIP)(SOP)(TSSOP)20 PINSR C/WR JC(top)Junction-to-case(top) C/WR C/W C/W C/W(1)For moreinformationabouttraditionaland new thermalmetrics,see theSemiconductorandICPackageThermalMetri csapplicationreport, (unlessotherwisenoted)TA= 25 CSN54HC245SN74HC245 PARAMETERTESTCONDITIONSVCCUNITMINTYPMAXM INMAXMINMAX2 20 VIHor VIL6 6 mA6 20 VIHor VIL6 6 mA6 or OEVI= VCCor 06 V 100 1000 1000nAIOZA or BVO= VCCor 06 V 10 5 AICCVI= VCCor 0,IO= 06 V816080 ACiDIR or OE2 V to 6 ,CL= 50 pFoverrecommendedoperatingfree-airtemper aturerange(unlessotherwisenoted)(seeFigu re3)TA= 25 CSN54HC245SN74HC245 FROMTOPARAMETERVCCUNIT(INPUT)(OUTPUT)MIN TYPMAXMINMAXMINMAX2 V40105160130tpdA or BB or V15213226ns6 V121827222 V125230340290tenOEA or V23466858ns6 V203958492 V74200300250tdisOEA or V25406050ns6 V213451432 V20609075ttA or V8121815ns6 V6101513 Copyright 1982 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback5 ProductFolderLinks:SN54HC245SN74HC245051 01520253035404501234567 TPD VCC at 25SC C002 05101520253035404501234567 TPD VCC at 25SC C002 SN54HC245,SN74HC245 SCLS131E DECEMBER1982 ,CL= 150 pFoverrecommendedoperatingfree-airtemper aturerange(unlessotherwisenoted)(seeFigu re3)VCCTA= 25 CSN54HC245SN74HC245 FROMTOPARAMETERUNIT(INPUT)(OUTPUT)MINTYP MAXMINMAXMINMAX2 V54135200170tpdA or BB or V18274034ns6 V152334292 V150270405335tenOEA or V31548167ns6 V254669562 V45210315265ttA or V17426353ns6 25 CPARAMETERTESTCONDITIONSTYPUNITCpdPowerd issipationcapacitanceper transceiverNo TPDvs VCCat 25 CFigure2.

5 TPDvs VCCat 25 C6 SubmitDocumentationFeedbackCopyright 1982 2015,TexasInstrumentsIncorporatedProduct FolderLinks:SN54HC245SN74HC245 VOLTAGE WAVEFORMINPUT RISE AND FALL TIMES50%50%10%10%90%90%VCC0 VtrtInputfVOLTAGE WAVEFORMSPROPAGATION DELAY AND OUTPUT TRANSITION TIMES50%50%50%10%10%90%90%VCCVOHVOL0 VtrtInputfIn-PhaseOutput50%tPLHtPHL50%50 %10%10%90%90%VOHVOL ttrftPHLtPLHOut-of-PhaseOutput50%10%90%V CC VCCVOL0 VOutputControl(Low-LevelEnabling)OutputW aveform 1(See Note B)50%tPZLtPLZVOLTAGE WAVEFORMSENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTSVOH 0 V50%50%tPZHtPHZO utputWaveform 2(See Note B) VCCTestPointFrom OutputUnder TestCL(see Note A)RLVCCS1S2 LOAD CIRCUITPARAMETERCLtPZHtpdor tttdistentPZLtPHZtPLZ1 k 1 k 50 pFor150 pF50 pFOpenClosedRS1 LClosedOpenS2 OpenClosedClosedOpen50 pFor150 pFOpenOpen SN54HC245, DECEMBER1982 REVISEDSEPTEMBER20157 is for an outputwith internalconditionssuchthat the outputis low exceptwhendisabledby the is for an outputwith internalconditionssuchthat the outputis highexceptwhendisabledby the inputpulsesare suppliedby generatorshavingthe followingcharacteristics:PRR 1 MHz,ZO= 50 , tr= 6 ns, tf= 6 outputsare measuredone at a time with one inputtransitionper tPHZare the sameas tPZHare the sameas tPHLare the sameas LoadCircuitand VoltageWaveformsCopyright 1982 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback7 ProductFolderLinks.

6 SN54HC245SN74HC245 DIROEA1B1121819To Seven Other ChannelsSN54HC245,SN74HC245 SCLS131E DECEMBER1982 transceiversare designedfor A bus to the B bus or fromthe B bus to the A bus,dependingon the logiclevelat thedirection-control(DIR) output-enable(OE)inputcan be usedto disablethe deviceso that the busesare ensurethe high-impedancestateduringpowerup or powerdown,OE shouldbe tiedto VCCthrougha pullupresistor;the minimumvalueof the resistoris determinedby the current-sinkingcapabilityof the (PositiveLogic) SNx4HC245deviceshavea wideoperatingVCCrangefrom2 V to 6 V with sloweredgeratesto lists the functionmodesof the FunctionTableINPUTSOPERATIONOEDIRLLB datato A busLHA datato B busHXIsolation8 SubmitDocumentationFeedbackCopyright 1982 2015,TexasInstrumentsIncorporatedProduct FolderLinks:SN54HC245SN74HC2455 V LEDs, Relays,or other system boardsOEVGNDA1A8B1B8 Regulated 5 V CCCDIRor other systemboards5 V LEDs, Relays,or other system boardsOEVGNDA1A8B1B8 Regulated 5 V or V CCCDIR5 V LEDs, Relays,or other systemboards CSN54HC245, DECEMBER1982 REVISEDSEPTEMBER20159 Applicationand ImplementationNOTEI nformationin the followingapplicationssectionsis not partof the TI componentspecification,and TI doesnot warrantits accuracyor s customersareresponsiblefor determiningsuitabilityof componentsfor test theirdesignimplementationto SNx4HC245is a low-driveCMOS devicethat can be usedfor a multitudeof bus interfacetypeapplicationswhereoutputring ingis a low driveand slowedgerateswill minimizeovershootand undershootonthe takento avoidbuscontentionbecauseit can drivecurrentsthat be combinedtoproducehigherdrivebut the highdrivewill alsocreatefasteredgesinto lightloads.

7 So routingand loadconditionsshouldbe consideredto RecommendedInputConditions Risetime and fall time specs:See ( t/ V) in theRecommendedOperatingConditions. Specifiedhigh and low levels:See (VIHand VIL) in RecommendOutputConditions Loadcurrentsshouldnot exceed25 mA per outputand 75 mA total for the part. Outputsshouldnot be 1982 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback9 ProductFolderLinks:SN54HC245SN74HC245 VccUnused InputInputOutputInputUnused InputOutputAHC245HC245AC245SN54HC245,SN7 4HC245 SCLS131E DECEMBER1982 (continued) SwitchingCharacteristicsComparison10 PowerSupplyRecommendationsThepowersupply canbe anyvoltagebetweenthe MINandMAXsupplyvoltageratinglocatedin shouldhavea goodbypasscapacitorto deviceswitha singlesupply, F is recommended;if thereare multipleVCCpins, F or F is recommendedforeachpowerpin. It is acceptableto parallelmultiplebypasscapsto rejectdifferentfrequenciesof Fand a 1 F are commonlyusedin bypasscapacitorshouldbe installedas closeto the powerpin aspossiblefor best , manycases,functionsor partsof functionsof digitallogicdevicesare unused,for example,whenonlytwoinputsof a triple-inputANDgateare usedor only 3 of the 4 buffergatesare shouldnot beleft unconnectedbecausethe undefinedvoltagesat the outsideconnectionsresultin specifiesthe rulesthat mustbe observedunderall unusedinputsof digitallogicdevicesmustbe connectedto a highor low bias to logiclevelthat shouldbe appliedto any particularunusedinputdependson the functionof the be tied toGNDor VCC, whichevermakesmoresenseor is is generallyacceptableto floatoutputs,unlessthe part is a the transceiverhas an outputenablepin, it will disablethe outputsectionof thepart will not disablethe inputsectionof the IOs.

8 So they cannotfloat LayoutDiagram10 SubmitDocumentationFeedbackCopyright 1982 2015,TexasInstrumentsIncorporatedProduct FolderLinks:SN54HC245SN74HC245SN54HC245, DECEMBER1982 REVISEDSEPTEMBER201512 Deviceand ,supportandcommunityresources,toolsand software,and quickaccessto sampleor RelatedLinksTECHNICALTOOLS&SUPPORT&PARTS PRODUCTFOLDERSAMPLE& followinglinksconnectto TI provided"AS IS" by the not constituteTI specificationsand do not necessarilyreflectTI's views;see TI's E2E OnlineCommunityTI'sEngineer-to-Engineer( E2E) ,you can ask questions,shareknowledge,exploreideasand helpsolveproblemswith 'sDesignSupportQuicklyfind helpfulE2E forumsalongwith designsupporttoolsandcontactinformationf or is a trademarkof othertrademarksare the propertyof leadsshouldbe shortedtogetheror the deviceplacedin conductivefoamduringstorageor handlingto preventelectrostaticdamageto the glossarylists and explainsterms,acronyms,and Mechanical,Packaging,and OrderableInformationThe followingpagesincludemechanical,packagin g,and the mostcurrentdataavailablefor the subjectto changewithoutnoticeand revisionofthis browser-basedversionsof this datasheet,referto the 1982 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback11 ProductFolderLinks.

9 SN54HC245SN74HC245 PACKAGE OPTION 1 PACKAGING INFORMATIONO rderable DeviceStatus(1)Package TypePackageDrawingPinsPackageQtyEco Plan(2)Lead finish/Ball material(6)MSL Peak Temp(3)Op Temp ( C)Device Marking(4/5)Samples5962-8408501 VRAACTIVECDIPJ201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 1255962-8408501 VRASNV54HC245J5962-8408501 VSAACTIVECFPW201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 1255962-8408501 VSASNV54HC245W84085012 AACTIVELCCCFK201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 12584085012 ASNJ54HC245FK8408501 RAACTIVECDIPJ201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 1258408501 RASNJ54HC245J8408501 SAACTIVECFPW201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 1258408501 SASNJ54HC245 WJM38510/65503 BRAACTIVECDIPJ201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 125JM38510/65503 BRAJM38510/65503 BSAACTIVECFPW201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 125JM38510/65503 BSAM38510/65503 BRAACTIVECDIPJ201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 125JM38510/65503 BRAM38510/65503 BSAACTIVECFPW201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 125JM38510/65503 BSASN54HC245 JACTIVECDIPJ201 Non-RoHS& GreenSNPBN / A for Pkg Type-55 to 125SN54HC245 JSN74HC245

10 DBRACTIVESSOPDB202000 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 DBRG4 ACTIVESSOPDB202000 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 DWACTIVESOICDW2025 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 DWRACTIVESOICDW202000 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 DWRE4 ACTIVESOICDW202000 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 DWRG4 ACTIVESOICDW202000 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245 PACKAGE OPTION 2 Orderable DeviceStatus(1)Package TypePackageDrawingPinsPackageQtyEco Plan(2)Lead finish/Ball material(6)MSL Peak Temp(3)Op Temp ( C)Device Marking(4/5)SamplesSN74HC245 NACTIVEPDIPN2020 RoHS & GreenNIPDAUN / A for Pkg Type-40 to 85SN74HC245 NSN74HC245 NSRACTIVESONS202000 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 NSRE4 ACTIVESONS202000 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 PWACTIVETSSOPPW2070 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 PWG4 ACTIVETSSOPPW2070 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 PWRACTIVETSSOPPW202000 RoHS & GreenNIPDAU | SNLevel-1-260C-UNLIM-40 to 85HC245SN74HC245 PWRE4 ACTIVETSSOPPW202000 RoHS & GreenNIPDAUL evel-1-260C-UNLIM-40 to 85HC245SN74HC245 PWRG4 ACTIVETSSOPPW20