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SN74AHC138PWR

Public Made by Adom

by adom

Texas Instruments Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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SN74AHC138PWR

Texas Instruments · Signal Switches, Multiplexers, Decoders · TSSOP-16

SN74AHC138PWR from Texas Instruments, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 A0 input Address select 0 input for binary selection of one of eight output lines.
2 A1 input Address select 1 input for binary selection of one of eight output lines.
3 A2 input Address select 2 input for binary selection of one of eight output lines.
4 ~G2A input Output strobe 0, active low; decoding active when held low.
5 G1 input Output strobe 1, active low; decoding active when held low.
6 G2 input Output strobe 2, active high; decoding active when held high.
7 Y7 output Decoded output 7, active low when the binary address selects this line and all enable conditions are met.
8 GND power_in Ground connection for negative supply reference.
9 Y6 output Decoded output 6, active low when the binary address selects this line and all enable conditions are met.
10 Y5 output Decoded output 5, active low when the binary address selects this line and all enable conditions are met.
11 Y4 output Decoded output 4, active low when the binary address selects this line and all enable conditions are met.
12 Y3 output Decoded output 3, active low when the binary address selects this line and all enable conditions are met.
13 Y2 output Decoded output 2, active low when the binary address selects this line and all enable conditions are met.
14 Y1 output Decoded output 1, active low when the binary address selects this line and all enable conditions are met.
15 Y0 output Decoded output 0, active low when the binary address selects this line and all enable conditions are met.
16 VCC power_in Positive supply voltage, 2V to 5.5V operating range per specifications.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-16
Category Logic
Pins 16

CAD (KiCad official)

  • Symbol: SN74AHC138PWR
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: sn74ahc138pwr-etched.step / sn74ahc138pwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ahc138pwr.step / sn74ahc138pwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (39 pp, sha256 92a9e29060495cb2, retrieved 2026-09-26, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF