tiaTEXASINSTRUMENTSSZZA036Belectricalgfree-airtemperaturecharacteristicsoverrecommendedoperatingrange(unlessotherwisenoted)SN54LVTH16646SN74LVTH16646UNITPARAMETERTESTCONDITIONSMINTYPtMAXTYPtMAXMIN-1.2-1.2VVIKVCC=2.7V,I= 18 mAVcc0.2Vcc-0.2Vcc = 2.7 V to 3.6 V.IOH = -100 μAVcC = 2.7V,2.42.4lOH= 8 mAvVOH2OH =24 mAVcC=3V2[OH = 32 mA0.20.2OL=100 μAVCC=2.7V0.50.5lOL=24mA0.40.4[OL = 16 mAvVoL0.50.5lOL = 32 mAVCC=3V0.55OL = 48 mA0.55[OL = 64 mAS±1±1Vcc= 3.6 V,VI=VCC or GNDControl inputsVI= 5.5 V1010Vcc =0 or 3.6 V.1人2020VI=5.5VμA11VcC=3.6VVi=VCCA or B portst0-5-5Mi=0R±100MAofVCC=0,Vj or Vo= 0 to 4.5V7575Vi= 0.8 VVcC=3V-7575MAAorBportsVi=2VIi(hold)±500VcC=3.6 Vvs,Vj=0to3.6VVcc = 0 to 1.5 V, Vo = 0.5 V to 3 V,±100*±100HAlOZPUOE=don't careVcc=1.5 Vto0, Vo=0.5Vto 3V,±100*±100μAlOZPDOE = don't care0.190.19Outputs highVcc =3.6V,lo=0,55mAIccOutputs lowV,-VCCorGND0.190.19Outputs disabledVcc=3Vto3.6V,One input atVcc0.6V0.20.2Alcc1mAOther inputs at Vcc or GND4Ci4pFVi=3Vor0Cio1010pFVo=3Voro*On products compliant to MIL-PRF-38535, this parameter is not production tested.All typical values areatVcc=3.3V,TA=25°c.tUnused pins at Vcc or GNDSThis is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to another. This is the increase in supply current for each input that is at the specified TTL voltage level, rather than Vcc or GND.Figure 4.ExampleElectrical-CharacteristicsSectionLive-lnsertionSpecificationsThe live-insertion section of the data sheet provides information about the parameters neededfor true live insertion.These parameters include loff, lozPu, lozPD,and BIAs Vcc for prechargingpurposes.Anexample of a typical live-insertion section is shown in Figure5.11UnderstandingandInterpretingStandard-LogicDataSheets
SZZA036B Understanding and Interpreting Standard-Logic Data Sheets 11 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54LVTH16646 SN74LVTH16646 TEST CONDITIONS UNIT MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 2.7 V, II = –18 mA –1.2 –1.2 V VCC = 2.7 V to 3.6 V, IOH = –100 µA VCC–0.2 VCC–0.2 VOH VCC = 2.7 V, IOH = –8 mA 2.4 2.4 VOH V VCC =3V IOH = –24 mA 2 V VCC = 3 V IOH = –32 mA 2 VCC =27V IOL = 100 µA 0.2 0.2 VCC = 2.7 V IOL = 24 mA 0.5 0.5 VOL IOL = 16 mA 0.4 0.4 VOL V VCC =3V IOL = 32 mA 0.5 0.5 V VCC = 3 V IOL = 48 mA 0.55 IOL = 64 mA 0.55 Control inputs VCC = 3.6 V, VI = VCC or GND ±1 ±1 Control inputs VCC = 0 or 3.6 V, VI = 5.5 V 10 10 II ‡ VI = 5.5 V 20 20 µA A or B ports‡ VCC = 3.6 V VI = VCC 1 1 VI = 0 –5 –5 Ioff VCC = 0, VI or VO = 0 to 4.5 V ±100 µA VCC =3V VI = 0.8 V 75 75 II(hold) A or B ports VCC = 3 V VI ( ) = 2 V –75 –75 µA VCC = 3.6 V§, VI = 0 to 3.6 V ±500 IOZPU VCC = 0 to 1.5 V, VO = 0.5 V to 3 V, OE = don’t care ±100* ±100 µA IOZPD VCC = 1.5 V to 0, VO = 0.5 V to 3 V, OE = don’t care ±100* ±100 µA V 36V I 0 Outputs high 0.19 0.19 ICC VCC = 3.6 V, IO = 0, VI = VCC or GND Outputs low 5 5 mA VI = VCC or GND Outputs disabled 0.19 0.19 ∆ICC¶ VCC = 3 V to 3.6 V, One input at VCC – 0.6 V, Other inputs at VCC or GND 0.2 0.2 mA Ci VI = 3 V or 0 4 4 pF Cio VO = 3 V or 0 10 10 pF * On products compliant to MIL-PRF-38535, this parameter is not production tested. † All typical values are at VCC = 3.3 V, TA = 25°C. ‡ Unused pins at VCC or GND § This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to another. ¶ This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND. Figure 4. Example Electrical-Characteristics Section Live-Insertion Specifications The live-insertion section of the data sheet provides information about the parameters needed for true live insertion. These parameters include Ioff, IOZPU, IOZPD, and BIAS VCC for precharging purposes. An example of a typical live-insertion section is shown in Figure 5
TEXASSZZA036BINSTRUMENTSlive-insertionspecificationsforBportover recommended operating free-airtemperature rangePARAMETERTEST CONDITIONSMINMAXUNIT10MAloffVcC=0,BIAS VCC =0,VjorVo=0to1.5V±30μAlOZPUVcc=0to1.5V,BIAS VcC = 0,Vo=0.5Vto1.5V,OE=0Vo=0.5Vto1.5V,OE=0±30μAlOZPDVcc=1.5Vto0BIASVCC=0,5mAVcc = 0 to 3.15VBIAS VcC = 3.15 V to 3.45 V,ICC (BIASVCC)Vo (Bport)=0 to 1.5 V10MAVcc= 3.15 Vto 3.45 VVo0.95VVcc=0,BIAS VCC =3.3 V,lo=01.05-1MALoIVcc= 0.BIASVcc=3.15Vto3.45V,Vo (B port) = 0.6 VFigure5.ExampleLive-InsertionSectionTimingRequirementsThe timing requirements section ofthedata sheet is similarto therecommended operatingconditionssection(seeFigure6).Thesearetimingsthattheapplicationcircuitshouldprovidetothedeviceforittofunctionasintended.Thissectionaddressesthetimingrelationshipsbetweentransitionsofoneormoreinputsignalsthatarenecessarytoensuredevicefunctionalityandapplies onlytosequential-logicdevices (e.g.,flip-flops,latches,andregisters)timing requirementsoverrecommendedoperatingfree-airtemperaturerange(unlessotherwisenoted) (seeFigure2)SN54LVTH16646SN74LVTH16646VcC=3.3VVcC=3.3VUNITVcC =2.7 VVcC=2.7V± 0.3 V± 0.3 VMINMAXMINMAXMINMAXMINMAX150150150150MHZfclockClock frequency3.33.33.3tw人3.3nsPulse duration, CLK high or low1.21.51.21.5Data highSetup time,nstsuAor BbeforeCLKABTor CLKBAT22.822.8Data low00.500.5Hold time.Data highthnsAor Bafter CLKABT or CLKBAT0.50.50.50.5Data lowFigure6.ExampleTiming-RequirementsSectionSwitching CharacteristicsThe switchingcharacteristics section of the data sheet,alsoknown in the industryas theactable, includes thoseparameters that specifyhowfastthe outputswillrespondto signal changesattheinputsunderspecifiedconditionsofsupplyvoltage,temperature,andload(seeFigure7)Helpful Hint:Theswitchingcharacteristicstablesometimesiscalledtheacsection,andshouldnotbeconfusedwiththeac small-signal performancebecause switching characteristicsdescribethelarge-signaltransientresponseofthecircuit.12UnderstandingandInterpretingStandard-LogicDataSheets
SZZA036B 12 Understanding and Interpreting Standard-Logic Data Sheets live-insertion specifications for B port over recommended operating free-air temperature range PARAMETER TEST CONDITIONS MIN MAX UNIT Ioff VCC = 0, BIAS VCC = 0, VI or VO = 0 to 1.5 V 10 µA IOZPU VCC = 0 to 1.5 V, BIAS VCC = 0, VO = 0.5 V to 1.5 V, OE = 0 ±30 µA IOZPD VCC = 1.5 V to 0, BIAS VCC = 0, VO = 0.5 V to 1.5 V, OE = 0 ±30 µA ICC (BIAS VCC) VCC = 0 to 3.15 V BIAS VCC = 3 15 V to 3 45 V VO (B port) = 0 to 1 5 V 5 mA ICC (BIAS VCC) VCC = 3.15 V to 3.45 V BIAS VCC = 3.15 V to 3.45 V, VO (B port) = 0 to 1.5 V 10 µA VO VCC = 0, BIAS VCC = 3.3 V, IO = 0 0.95 1.05 V IO VCC = 0, BIAS VCC = 3.15 V to 3.45 V, VO (B port) = 0.6 V –1 µA Figure 5. Example Live-Insertion Section Timing Requirements The timing requirements section of the data sheet is similar to the recommended operating conditions section (see Figure 6). These are timings that the application circuit should provide to the device for it to function as intended. This section addresses the timing relationships between transitions of one or more input signals that are necessary to ensure device functionality and applies only to sequential-logic devices (e.g., flip-flops, latches, and registers). timing requirements over recommended operating free-air temperature range (unless otherwise noted) (see Figure 2) SN54LVTH16646 SN74LVTH16646 VCC = 3.3 V ± 0.3 V VCC = 2.7 V VCC = 3.3 V ± 0.3 V VCC = 2.7 V UNIT MIN MAX MIN MAX MIN MAX MIN MAX fclock Clock frequency 150 150 150 150 MHz tw Pulse duration, CLK high or low 3.3 3.3 3.3 3.3 ns t Setup time, Data high 1.2 1.5 1.2 1.5 tsu ns , A or B before CLKAB↑ or CLKBA↑ Data low 2 2.8 2 2.8 ns th Hold time, Data high 0.5 0 0.5 0 th ns A or B after CLKAB↑ or CLKBA↑ Data low 0.5 0.5 0.5 0.5 ns Figure 6. Example Timing-Requirements Section Switching Characteristics The switching characteristics section of the data sheet, also known in the industry as the ac table, includes those parameters that specify how fast the outputs will respond to signal changes at the inputs under specified conditions of supply voltage, temperature, and load (see Figure 7). Helpful Hint: The switching characteristics table sometimes is called the ac section, and should not be confused with the ac small-signal performance because switching characteristics describe the large-signal transient response of the circuit
iTEXASINSTRUMENTSSZZA036Bswitchingcharacteristicsoverrecommended operatingfree-airtemperaturerange,C=5o pF(unlessotherwisenoted)(seeFigure2)SN54LVTH16646SN74LVTH16646TOFROMVcc=3.3VVcc=3.3VUNITPARAMETERVcC=2.7VVcC=2.7V(INPUT)(OUTPUT)± 0.3V±0.3VMINTYPtMAXMAXMINMAXMINMAXMIN150150fmax150150MHz1.351.34.24.52.84.7tPLHCLKBAorAorBnsCLKAB1.34.551.32.84.24.7tPHL13.6N4.112.43.43.9tPLHnsAorBBorA13.6M4.112.13.43.9tPHL14.75.612.84.55.4tPLHSBA or SABtAorBns15.6134.54.75.4tPHL14.55.412.54.35.2tPZHDEnsAorB14.55.412.64.35.2tpZL25.86.3245.66.1tPHZDEnsAorB25.66.323.65.46.1tPLZ14.65.5134.45.3tPZHDIRnsAorB14.615.35.534.4tpZL61.57.11.53.95.76.8tPHZnsDIRAorB1.55.561.53.65.25.7tpLZAll typical values are at Vcc = 3.3 V, TA = 25°C.t These parameters are measured with the internal output state of the storage register opposite that of the bus input.Figure7.ExampleofSwitching-CharacteristicsSectionNoise CharacteristicsThissectionindicatesadevice'snoiseperformanceduetopower-railandground-rail bounceassociated with thehighpeak currentsduring dynamic switching (seeFigure 8).noisecharacteristics,Vcc=5V,CL=50pF,TA=25°C (seeNote4)SN74AHCT16541UNITPARAMETERTYPMAXMIN0.6VVOL(P)Quiet output,maximum dynamic VoOL0.3VVOLMQuiet output,minimum dynamic VoL4.6vVOHMQuiet output, minimum dynamic VoHV2VIH(D)High-level dynamic input voltage0.8vVIL(D)Low-level dynamic input voltageNOTE 2:Characteristics are for surface-mount packages only.Figure8.ExampleNoise-CharacteristicsSection13UnderstandingandInterpretingStandard-LogicDataSheets
SZZA036B Understanding and Interpreting Standard-Logic Data Sheets 13 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 2) SN54LVTH16646 SN74LVTH16646 PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 3.3 V ± 0.3 V VCC = 2.7 V VCC = 3.3 V ± 0.3 V VCC = 2.7 V UNIT MIN MAX MIN MAX MIN TYP† MAX MIN MAX fmax 150 150 150 150 MHz tPLH CLKBA or A or B 1.3 4.5 5 1.3 2.8 4.2 4.7 ns tPHL CLKAB A or B 1.3 4.5 5 1.3 2.8 4.2 4.7 ns tPLH A or B B or A 1 3.6 4.1 1 2.4 3.4 3.9 ns tPHL A or B B or A 1 3.6 4.1 1 2.1 3.4 3.9 ns tPLH SBA or SAB‡ A or B 1 4.7 5.6 1 2.8 4.5 5.4 ns tPHL SBA or SAB‡ A or B 1 4.7 5.6 1 3 4.5 5.4 ns tPZH OE A or B 1 4.5 5.4 1 2.5 4.3 5.2 ns tPZL OE A or B 1 4.5 5.4 1 2.6 4.3 5.2 ns tPHZ OE A or B 2 5.8 6.3 2 4 5.6 6.1 ns tPLZ OE A or B 2 5.6 6.3 2 3.6 5.4 6.1 ns tPZH DIR A or B 1 4.6 5.5 1 3 4.4 5.3 ns tPZL DIR A or B 1 4.6 5.5 1 3 4.4 5.3 ns tPHZ DIR A or B 1.5 6 7.1 1.5 3.9 5.7 6.8 ns tPLZ DIR A or B 1.5 5.5 6 1.5 3.6 5.2 5.7 ns † All typical values are at VCC = 3.3 V, TA = 25°C. ‡ These parameters are measured with the internal output state of the storage register opposite that of the bus input. Figure 7. Example of Switching-Characteristics Section Noise Characteristics This section indicates a device’s noise performance due to power-rail and ground-rail bounce associated with the high peak currents during dynamic switching (see Figure 8). noise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 4) PARAMETER SN74AHCT16541 UNIT MIN TYP MAX VOL(P) Quiet output, maximum dynamic VOL 0.6 V VOL(V) Quiet output, minimum dynamic VOL –0.3 V VOH(V) Quiet output, minimum dynamic VOH 4.6 V VIH(D) High-level dynamic input voltage 2 V VIL(D) Low-level dynamic input voltage 0.8 V NOTE 2: Characteristics are for surface-mount packages only. Figure 8. Example Noise-Characteristics Section
iTEXASSZZA036BINSTRUMENTSOperatingCharacteristicsThe operatingcharacteristics section of the data sheet includes theparameterthatspecifies thepower-dissipation capacitance(Cpd)in a CMOS device (seeFigure 9).For additional informationon how Cpd is measured and used to calculate total CMOS-device power consumption in theapplication,refertotheTIapplicationreport,CMOsPowerConsumptionandCpdCalculation,literaturenumberSCAA035operatingcharacteristics,TA=25°CVcc=1.8VVcc=2.5VVcc=3.3VPARAMETERTESTCONDITIONSUNITTYPTYPTYP202123CL = 0,f = 10 MHzpFCpdPowerdissipationcapacitancepergateFigure9.ExampleofOperating-CharacteristicsSectionParameterMeasurementInformationThe parameter measurement information section of the data sheet illustrates the test loads andwaveformsthatareusedwhentestingthedevice(seeFigure10)14Understandingand InterpretingStandard-LogicDataSheets
SZZA036B 14 Understanding and Interpreting Standard-Logic Data Sheets Operating Characteristics The operating characteristics section of the data sheet includes the parameter that specifies the power-dissipation capacitance (Cpd) in a CMOS device (see Figure 9). For additional information on how Cpd is measured and used to calculate total CMOS-device power consumption in the application, refer to the TI application report, CMOS Power Consumption and Cpd Calculation, literature number SCAA035. operating characteristics, TA = 25°C PARAMETER TEST CONDITIONS VCC = 1.8 V VCC = 2.5 V VCC = 3.3 V PARAMETER TEST CONDITIONS UNIT TYP TYP TYP UNIT Cpd Power dissipation capacitance per gate CL = 0, f = 10 MHz 20 21 23 pF Figure 9. Example of Operating-Characteristics Section Parameter Measurement Information The parameter measurement information section of the data sheet illustrates the test loads and waveforms that are used when testing the device (see Figure 10)
iTEXASINSTRUMENTSSZZA036BPARAMETERMEASUREMENTINFORMATIONOVLOADS14RL0OpenFromOutputTESTS1O GNDUnder TesttpdOpenCtpLZ/pZLVLOAD>RL(soe Note A)GNDtPHZ/tPZH-2LOADCIRCUITINPUTCLVAVCCVMVLOADVitr1ko0.15VVCC/22xVcc30 pF1.8V±0.15VVCC2nsYCo2xVCC30 pF500Q0.15V2.5±0.2V≤2nsVco/20.3V6V50pF50002.7V2.7V52.5n81.5V2.7V1.5V6V50000.3v3.3V±0.3V≤2.5ns50pFVinpuVNTimingovVMInputovVOLTAGEWAVEFORMSPULSEDURATIONntsuViOutputDataVVMVMControlInputVMVMov(low-level-0vVOLTAGEWAVEFORMSenabllng)SETUPANDHOLDTIMESKtpLztpZLOutputVLOAD/2HWaveform1fVM/vMfVOL+VAInput+VMS1atVLOADVOLov(soe NoteB)T业IPHZtpZH+tPHLtPLH-4OutputVOHVOHWaveform2Yv(VOH-VAIvMOutputVMS1atGNDovVOL(soe Note B)VOLTAGEWAVEFORMSVOLTAGEWAVEFORMSENABLEANDDISABLETIMESPROPAGATIONDELAYTIMESNOTES:A.CLincludesprobe and jgcapacitance,Waveform1isforanoutputwithintermalconditionssuchthattheoutputislowexceptwhendisabledbytheoutputcontrolWaveform2 is for anoutput withinteralcondions such that the outputis high except whendisabled by theoutputcontrol.Allinput pulses are supplied bygenerators havingthefollowing characteristics: PRR≤10 MHz,Zo=50cD.Theoutputs aremeasured one at a timewithone transition permeasurementEtpLZandtPHZarethesameasldisF.tpZLandtpZHarethesameastenG.tPLHandtPHLare thesameaslpd-H.All parameters and waveforms are not applicable to alldevices.Figure10.ExampleParameterMeasurementInformationSection15Understanding and Interpreting Standard-LogicDataSheets
SZZA036B Understanding and Interpreting Standard-Logic Data Sheets 15 Figure 10. Example Parameter Measurement Information Section