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SN74AHC541PWR

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by Ray

Texas Instruments Buffer/Driver/Transceiver, TSSOP-20. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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SN74AHC541PWR

Texas Instruments · Buffer/Driver/Transceiver · TSSOP-20

SN74AHC541PWR from Texas Instruments, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OE1 input Active-low output enable 1. When OE1 is low AND OE2 is low, outputs Y1-Y8 follow inputs A1-A8; if either enable is high, all outputs go to high-impedance (Z).
2 A1 input Channel 1 buffer input. CMOS input, overvoltage tolerant up to 5.5 V regardless of VCC.
3 A2 input Channel 2 buffer input. CMOS input, overvoltage tolerant up to 5.5 V.
4 A3 input Channel 3 buffer input. CMOS input, overvoltage tolerant up to 5.5 V.
5 A4 input Channel 4 buffer input. CMOS input, overvoltage tolerant up to 5.5 V.
6 A5 input Channel 5 buffer input. CMOS input, overvoltage tolerant up to 5.5 V.
7 A6 input Channel 6 buffer input. CMOS input, overvoltage tolerant up to 5.5 V.
8 A7 input Channel 7 buffer input. CMOS input, overvoltage tolerant up to 5.5 V.
9 A8 input Channel 8 buffer input. CMOS input, overvoltage tolerant up to 5.5 V.
10 GND power_in Ground reference (0 V) for the device.
11 Y8 tri_state Channel 8 buffer output (noninverting, 3-state). Drives ±8 mA at VCC=5 V; high-Z when either OE is high.
12 Y7 tri_state Channel 7 buffer output (noninverting, 3-state). Drives ±8 mA at VCC=5 V; high-Z when either OE is high.
13 Y6 tri_state Channel 6 buffer output (noninverting, 3-state). Drives ±8 mA at VCC=5 V; high-Z when either OE is high.
14 Y5 tri_state Channel 5 buffer output (noninverting, 3-state). Drives ±8 mA at VCC=5 V; high-Z when either OE is high.
15 Y4 tri_state Channel 4 buffer output (noninverting, 3-state). Drives ±8 mA at VCC=5 V; high-Z when either OE is high.
16 Y3 tri_state Channel 3 buffer output (noninverting, 3-state). Drives ±8 mA at VCC=5 V; high-Z when either OE is high.
17 Y2 tri_state Channel 2 buffer output (noninverting, 3-state). Drives ±8 mA at VCC=5 V; high-Z when either OE is high.
18 Y1 tri_state Channel 1 buffer output (noninverting, 3-state). Drives ±8 mA at VCC=5 V; high-Z when either OE is high.
19 OE2 input Active-low output enable 2. Must be low along with OE1 for outputs to be active; if high, all outputs go to high-impedance.
20 VCC power_in Positive supply voltage. Recommended operating range 2 V to 5.5 V; absolute maximum 7 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-20
Category Logic
Pins 20

Ordering variants

Same part, different packaging or reel option.

  • SN74AHC541PWR
  • SN74AHC541PWRDB
  • SN74AHC541PWRDBR
  • SN74AHC541PWRDGV
  • SN74AHC541PWRDGVR
  • SN74AHC541PWRDW
  • SN74AHC541PWRDWR
  • SN74AHC541PWRN
  • SN74AHC541PWRNS
  • SN74AHC541PWRNSR
  • SN74AHC541PWRJ
  • SN74AHC541PWRW
  • SN74AHC541PWRFK

CAD (KiCad official)

  • Symbol: SN74AHC541PWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (42 pp, sha256 a432d1d66dbd0646, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF