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Texas Instruments SN74ALS540NS — Analog & Data Acquisition
Texas Instruments

SN74ALS540NS Buffer, Inverting, 3-State, 20-SOIC, 4.5V-5.5V

MPNSN74ALS540NS
End of Life

Texas Instruments 74ALS series, SN74ALS540NS, Buffer/Line Driver, Inverting, 3-State, 8-bit, 4.5V to 5.5V supply, 15mA/24mA output, 0°C to 70°C, Surface Mount 20-SOIC.

$4.01Ref. price · indicative, final on quote
SN74ALS540NS datasheet
Packaging20-SOIC (0.209", 5.30mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

SN74ALS540NS Technical Specifications
ParameterValue
Series74ALS
Logic typeBuffer, Inverting
Output type3-State
Mounting typeSurface Mount
Voltage4.5V ~ 5.5V
Current - output high, low15mA, 24mA
Operating temperature0°C ~ 70°C (TA)
PackageTube
Case20-SOIC (0.209\", 5.30mm Width)
Number of elements1
Number of bits per element8

Product details

What this 74ALS inverting buffer does on your bus

The Texas Instruments SN74ALS540NS is an 8-bit inverting buffer with 3-state outputs from the 74ALS family. It takes eight input signals and presents their inverted logic levels at the outputs, with a 3-state enable that lets you float the outputs for shared-bus applications.

Supply rail and temperature — where it fits on the board

Runs on a single 4.5 V to 5.5 V rail. The 0°C to 70°C commercial temperature grade means it is specified for indoor equipment.

Package and mounting — 20-SOIC on the layout

Housed in a 20-SOIC (0.209" body width, 5.30 mm) surface-mount package, supplier device package 20-SO. No exposed pad, so thermal dissipation goes through the leads.

Lifecycle and sourcing — active, no LTB worry

ROHS3 compliant, no exemption issues for EU markets.

Frequently asked questions

What is the pinout of SN74ALS540NS?

Design engineers need pin configuration to validate fit in schematics and PCB layout.

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Is SN74ALS540NS obsolete or still active?

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What is the equivalent of SN74ALS540NS?

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