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SN74AHCT541PWR

Public Unreviewed

by Ray

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

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Contents

README

markdown

SN74AHCT541PWR

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

SN74AHCT541PWR 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 and OE2 are both low, the eight buffers drive their outputs; if either OE is high, all Y outputs are placed in the high-impedance (3-state) condition. TTL-compatible input.
2 A1 input Channel 1 buffer input. TTL-voltage compatible; VIH >= 2 V, VIL <= 0.8 V at VCC = 4.5-5.5 V.
3 A2 input Channel 2 buffer input. TTL-voltage compatible.
4 A3 input Channel 3 buffer input. TTL-voltage compatible.
5 A4 input Channel 4 buffer input. TTL-voltage compatible.
6 A5 input Channel 5 buffer input. TTL-voltage compatible.
7 A6 input Channel 6 buffer input. TTL-voltage compatible.
8 A7 input Channel 7 buffer input. TTL-voltage compatible.
9 A8 input Channel 8 buffer input. TTL-voltage compatible.
10 GND power_in Ground reference (0 V) for the device.
11 Y8 tri_state Channel 8 buffered 3-state output. Drives A8 when both OE1 and OE2 are low; otherwise high-impedance. IOH = -8 mA, IOL = 8 mA at VCC = 4.5 V.
12 Y7 tri_state Channel 7 buffered 3-state output. Drives A7 when both OE inputs are low; otherwise high-impedance.
13 Y6 tri_state Channel 6 buffered 3-state output. Drives A6 when both OE inputs are low; otherwise high-impedance.
14 Y5 tri_state Channel 5 buffered 3-state output. Drives A5 when both OE inputs are low; otherwise high-impedance.
15 Y4 tri_state Channel 4 buffered 3-state output. Drives A4 when both OE inputs are low; otherwise high-impedance.
16 Y3 tri_state Channel 3 buffered 3-state output. Drives A3 when both OE inputs are low; otherwise high-impedance.
17 Y2 tri_state Channel 2 buffered 3-state output. Drives A2 when both OE inputs are low; otherwise high-impedance.
18 Y1 tri_state Channel 1 buffered 3-state output. Drives A1 when both OE inputs are low; otherwise high-impedance.
19 OE2 input Active-low output enable 2. Both OE1 and OE2 must be low to enable the eight buffers; a high on either enable places all Y outputs into 3-state.
20 VCC power_in Positive supply input. Recommended operating range 4.5-5.5 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.

  • SN74AHCT541PWR
  • SN74AHCT541PWRDB
  • SN74AHCT541PWRDBR
  • SN74AHCT541PWRDGV
  • SN74AHCT541PWRDGVR
  • SN74AHCT541PWRDW
  • SN74AHCT541PWRDWR
  • SN74AHCT541PWRN
  • SN74AHCT541PWRNS
  • SN74AHCT541PWRNSR
  • SN74AHCT541PWRJ
  • SN74AHCT541PWRW
  • SN74AHCT541PWRFK

CAD (KiCad official)

  • Symbol: SN74AHCT541PWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sn74ahct541pwr.step 267 KB You want the bare part, or you mark your own boards.
sn74ahct541pwr-etched.step 2.9 MB You want the part with SN74AHCT541PWR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 748 faces against 327 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Texas Instruments datasheet (39 pp, sha256 904d438e5acbb99c, 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