Details, datasheet, quote on part number: SN74HC540
CategorySemiconductors => Logic => Buffer/Driver/Transceiver => Inverting Buffer/Driver
Part familySN74HC540 Octal Buffers And Line Drivers With 3-State Outputs
DescriptionOctal Buffers And Line Drivers With 3-State Outputs 20-SOIC -40 to 85
CompanyTexas Instruments, Inc.
DatasheetDownload SN74HC540 datasheet
Cross ref.Similar parts: SN74LS366AJD, SN74LS366AJDS, SN74LS366AJS, SN74LS366AN, SN74LS366AND, SN74LS366ANDS, SN74LS366ANS, SN74LS368AD, SN74LS368ADR2, SN74LS368AJD
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ICC @ Nom Voltage(Max)(mA)0.08
Operating Temperature Range(C)-40 to 85
Technology FamilyHC
Schmitt TriggerNo
Output Drive (IOL/IOH)(Max)(mA)-6/6
F @ Nom Voltage(Max)(Mhz)20
tpd @ Nom Voltage(Max)(ns)25
Approx. Price (US$)0.15 | 1ku
  Mecanical Data
Pin nbPackage typeInd stdJEDEC codePackage qtyCarrierDevice markWidth (mm)Length (mm)Thick (mm)Pitch (mm)
20DWSOICR-PDSO-G25TUBEHC540 7.512.82.351.27


Features, Applications
D Wide Operating Voltage Range V D High-Current 3-State Outputs Drive Bus

Lines Directly To 15 LSTTL Loads Low Power Consumption, 80-A Max ICC Typical tpd ns 6-mA Output Drive 5 V Low Input Current 1 A Max Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs)

These octal buffers and line drivers feature the performance of the popular 'HC240 series and offer a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly facilitates printed circuit board layout. The 3-state control gate a 2-input NOR. If either output-enable or OE2) input is high, all eight outputs are in the high-impedance state. The 'HC540 devices provide inverted data at the outputs.

TA PDIP N SOIC to 85C SOP NS SSOP DB TSSOP PW CDIP to 125C CFP W LCCC FK PACKAGE Tube Tape and reel Tape and reel Tape and reel Tape and reel Tube ORDERABLE PART NUMBER SNJ54HC540J SNJ54HC540W

SNJ54HC540FK Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

On products compliant to MILPRF38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage range, VCC. 7 V Input clamp current, IIK (VI VI > VCC) (see Note 20 mA Output clamp current, IOK (VO VO > VCC) (see Note 20 mA Continuous output current, IO (VO 0 to VCC). 35 mA Continuous current through VCC or GND. 70 mA Package thermal impedance, JA (see Note 2): DB package. 70C/W DW package. 58C/W N package. 69C/W NS package. 60C/W PW package. 83C/W Storage temperature range, Tstg. to 150C

Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. 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 51-7.

SN54HC540 MIN VCC VIH Supply voltage VCC 2 V VCC 4.5 V VCC 6 V VCC 2 V VIL VI VO t/v Low-level Low level in input ut voltage Input voltage Output voltage VCC 2 V VCC 4.5 V VCC 6 V VCC 4.5 V VCC 6 V VCC NOM 5 MAX 6 SN74HC540 MIN VCC 400 ns NOM 5 MAX 6 UNIT V

TA Operating free-air temperature C NOTE 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 (unless otherwise noted)


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