SCLS260H – DECEMBER 1995 – REVISED JANUARY 2000SN54AHC540, SN74AHC540OCTAL BUFFERS/DRIVERSWITH 3-STATE OUTPUTSDEPIC™ (Enhanced-Performance ImplantedDDDCMOS) ProcessOperating Range 2-V to 5.5-V VCCLatch-Up Performance Exceeds 250 mA PerJESD 17Package Options Include PlasticSmall-Outline (DW), Shrink Small-Outline(DB), Thin Very Small-Outline (DGV), ThinShrink Small-Outline (PW), and CeramicFlat (W) Packages, Ceramic Chip Carriers(FK), and Standard Plastic (N) and Ceramic(J) DIPsSN54AHC540...J OR W PACKAGESN74AHC540...DB, DGV, DW, N, OR PW PACKAGE(TOP VIEW)descriptionThe ’AHC540 octal buffers/drivers are ideal fordriving bus lines or buffer memory addressregisters. These devices feature inputs andoutputs on opposite sides of the package tofacilitate printed circuit board layout.The 3-state control gate is a two-input AND gatewith active-low inputs so that if eitheroutput-enable (OE1 or OE2) input is high, allcorresponding outputs are in the high-impedancestate. The outputs provide inverted data whenthey are not in the high-impedance state.To ensure the high-impedance state during powerup or power down, OE should be tied to VCCthrough a pullup resistor; the minimum value ofthe resistor is determined by the current-sinkingcapability of the driver.OE1A1A2A3A4A5A6A7A8GND1234567891020191817161514131211VCCOE2Y1Y2Y3Y4Y5Y6Y7Y8 SN54AHC540...FK PACKAGE(TOP VIEW)A2A1OE1VCCA3A4A5A6A74567832120191817161514910111213OE2Y1Y2Y3Y4Y5The SN54AHC540 is characterized for operation over the full military temperature range of –55°C to 125°C.The SN74AHC540 is characterized for operation from –40°C to 85°C.FUNCTION TABLE(each buffer/driver)INPUTSOE1LLHXOE2LLXHALHXXOUTPUTYHLZZPlease be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.EPIC is a trademark of Texas Instruments Incorporated.PRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily includetesting of all parameters.Copyright © 2000, Texas Instruments IncorporatedOn products compliant to MIL-PRF-38535, all parameters are testedunless otherwise noted. On all other products, productionprocessing does not necessarily include testing of all parameters.POST OFFICE BOX 655303 DALLAS, TEXAS 75265•A8GNDY8Y7Y61SCLS260H – DECEMBER 1995 – REVISED JANUARY 2000SN54AHC540, SN74AHC540OCTAL BUFFERS/DRIVERSWITH 3-STATE OUTPUTSlogic symbol† OE1OE2A1A2A3A4A5A6A7A811923456789&EN11817161514131211Y1Y2Y3Y4Y5Y6Y7Y8†This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.logic diagram (positive logic)OE1OE2119A1218Y1To Seven Other Channelsabsolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 VInput voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 VOutput voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 VInput clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20 mAOutput clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mAContinuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mAContinuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±75 mAPackage thermal impedance, θJA (see Note 2):DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/WDGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92°C/WDW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/WN package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/WPW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . °C to 150°CStorage temperature range, Tstg –65‡Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, andfunctional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is notimplied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.NOTES:1.The input and output voltage ratings may be exceeded if the input and output current ratings are observed.2.The package thermal impedance is calculated in accordance with JESD 51.2POST OFFICE BOX 655303 DALLAS, TEXAS 75265• SCLS260H – DECEMBER 1995 – REVISED JANUARY 2000SN54AHC540, SN74AHC540OCTAL BUFFERS/DRIVERSWITH 3-STATE OUTPUTSrecommended operating conditions (see Note 3)SN54AHC540MINVCCVIHSupply voltageHigh-level input voltageVCC = 2 VVCC = 3 VVCC = 5.5 VVCC = 2 VVILVIVOIOHLow-level input voltageInput voltageOutput voltageHigh-level output currentVCC = 2 VVCC = 3.3 V ± 0.3 VVCC = 5 V ±0.5 VVCC = 2 VIOLLow-level output currentVCC = 3.3 V ± 0.3 VVCC = 5 V ±0.5 VVCC = 3.3 V ± 0.3 VVCC = 5 V ±0.5 VVCC = 3 VVCC = 5.5 V0021.52.13.850.50.91.655.5VCC–50–4–850481002000MAX5.5SN74AHC540MIN21.52.13.850.50.91.655.5VCC–50–4–8504810020VVmAmAmAmAns/VVVMAX5.5UNITV∆t/∆vInputtransitionriseorfallrateInput transition rise or fall rateTAOperating free-air temperature–55125–4085°CNOTE 3:All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,Implications of Slow or Floating CMOS Inputs, literature number SCBA004.electrical characteristics over recommended operating free-air temperature range (unlessotherwise noted)PARAMETERTESTCONDITIONSTEST CONDITIONSVCC2 VIOH = –50 mAVOHIOH = –4 mAIOH = –8 mAIOL = 50 mAVOLIOL = 4 mAIIIOZ†ICCCiCoIOL = 8 mAVI = VCC or GNDVO = VCC or GND,VI (OE) = VIL or VIHVI = VCC or GND,VI = VCC or GNDIO = 03 V4.5 V3 V4.5 V2 V3 V4.5 V3 V4.5 V0 V to 5.5 V5.5 V5.5 V5 V2TA = 25°CMINTYPMAX1.92.94.42.583.940.10.10.10.360.36±0.1±0.25410234.5SN54AHC540MIN1.92.94.42.483.80.10.10.10.50.5±1*±2.540MAXSN74AHC540MIN1.92.94.42.483.80.10.10.10.440.44±1±2.54010mAmAmApFpFVVMAXUNITVO = VCC or GND5 V4* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.†For I/O pins, the parameter IOZ includes the input leakage current.POST OFFICE BOX 655303 DALLAS, TEXAS 75265•3SCLS260H – DECEMBER 1995 – REVISED JANUARY 2000SN54AHC540, SN74AHC540OCTAL BUFFERS/DRIVERSWITH 3-STATE OUTPUTS switching characteristics over recommended operating free-air temperature range,VCC = 3.3 V±0.3 V (unless otherwise noted) (see Figure 1)PARAMETERtPLHtPHLtPZHtPZLtPHZtPLZtPLHtPHLtPZHtPZLtPHZtPLZFROM(INPUT)AOEOEAOEOETO(OUTPUT)YYYYYYLOADCAPACITANCECL = 15 pF=15pF=15pFCL = 15 pFCL = 15 pF=15pFCL = 50 pF=50pFCL = 50 pF=50pFCL = 50 pF=50pFTA = 25°CMINTYPMAX4.8*4.8*6.8*6.8*6.8*6.8*7.37.388887*7*10.5*10.5*10.5*10.5*10.510.5141415.415.41.5**SN54AHC540MIN1*1*1*1*1*1*111111MAX8.5*8.5*12.5*12.5*12.5*12.5*1212161617.517.5SN74AHC540MIN111111111111MAX8.58.512.512.512.512.51212161617.517.51.5UNITnsnsnsnsnsnsnstsk(o)CL = 50 pF∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.∗∗ On products compliant to MIL-PRF-38535, this parameter does not apply.switching characteristics over recommended operating free-air temperature range,VCC = 5 V±0.5 V (unless otherwise noted) (see Figure 1)PARAMETERtPLHtPHLtPZHtPZLtPHZtPLZtPLHtPHLtPZHtPZLtPHZtPLZFROM(INPUT)AOEOEAOEOETO(OUTPUT)YYYYYYLOADCAPACITANCECL = 15 pF=15pF=15pFCL = 15 pFCL = 15 pF=15pF=50pFCL = 50 pFCL = 50 pF=50pFCL = 50 pF=50pFTA = 25°CMINTYPMAX3.7*3.7*4.7*4.7*4.5*4.5*5.25.26.26.2665*5*7.2*7.2*6.8*6.8*779.29.28.88.81**SN54AHC540MIN1*1*1*1*1*1*111111MAX6*6*8.5*8.5*8*8*8810.510.51010SN74AHC540MIN111111111111MAX668.58.5888810.510.510101UNITnsnsnsnsnsnsnstsk(o)CL = 50 pF∗ On products compliant to MIL-PRF-38535, this parameter is not production tested.∗∗ On products compliant to MIL-PRF-38535, this parameter does not apply.4POST OFFICE BOX 655303 DALLAS, TEXAS 75265• SCLS260H – DECEMBER 1995 – REVISED JANUARY 2000SN54AHC540, SN74AHC540OCTAL BUFFERS/DRIVERSWITH 3-STATE OUTPUTSnoise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 4)PARAMETERVOL(P)VOL(V)VOH(V)VIH(D)Quiet output, maximum dynamic VOLQuiet output, minimum dynamic VOLQuiet output, minimum dynamic VOHHigh-level dynamic input voltage4.73.51.5SN74AHC540MINMAX0.8–0.8UNITVVVVVVIL(D)Low-level dynamic input voltageNOTE 4:Characteristics are for surface-mount packages only.operating characteristics, VCC = 5 V, TA = 25°CPARAMETERCpdPower dissipation capacitanceTEST CONDITIONSNo load,f = 1 MHzTYP12UNITpFPOST OFFICE BOX 655303 DALLAS, TEXAS 75265•5SCLS260H – DECEMBER 1995 – REVISED JANUARY 2000SN54AHC540, SN74AHC540OCTAL BUFFERS/DRIVERSWITH 3-STATE OUTPUTS PARAMETER MEASUREMENT INFORMATIONRL = 1 kΩS1VCCOpenGNDFrom OutputUnder TestCL(see Note A)TestPointFrom OutputUnder TestCL(see Note A)TESTtPLH/tPHLtPLZ/tPZLtPHZ/tPZHOpen DrainS1OpenVCCGNDVCCLOAD CIRCUIT FORTOTEM-POLE OUTPUTSLOAD CIRCUIT FOR3-STATE AND OPEN-DRAIN OUTPUTSVCCTiming Input50% VCCtsuData Input0 V50% VCCth0 VVCC50% VCC0 VtwVCCInput50% VCC50% VCCVOLTAGE WAVEFORMSPULSE DURATIONVCCInputtPLHIn-PhaseOutputtPHLOut-of-PhaseOutput50% VCC50% VCC50% VCC50% VCC0 VtPHLVOH50% VCCVOLtPLHVOH50% VCCVOLOutputWaveform 2S1 at GND(see Note B)OutputControltPZLVOLTAGE WAVEFORMSSETUP AND HOLD TIMESVCC50% VCC50% VCCtPLZ50% VCCtPZH50% VCC≈VCCVOL + 0.3 VtPHZVOH – 0.3 VVOH≈0 VVOL0 VOutputWaveform 1S1 at VCC(see Note B)VOLTAGE WAVEFORMSPROPAGATION DELAY TIMESINVERTING AND NONINVERTING OUTPUTSVOLTAGE WAVEFORMSENABLE AND DISABLE TIMESLOW- AND HIGH-LEVEL ENABLINGNOTES:A.CL includes probe and jig capacitance.B.Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.C.All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤3 ns, tf ≤ 3 ns.D.The outputs are measured one at a time with one input transition per measurement.Figure 1. Load Circuit and Voltage Waveforms6POST OFFICE BOX 655303 DALLAS, TEXAS 75265•IMPORTANT NOTICE
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