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74HC138PW

Public Made by Adom

by adom

Nexperia Signal Switches / Encoders & Decoders / Multiplexers, TSSOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs 74hc138pw: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
74hc138pw-etched.fit.json 74hc138pw: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
74hc138pw-etched.glb 74hc138pw: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body w… · Ray
74hc138pw-etched.step 74hc138pw: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body w… · Ray
74hc138pw-hero.glb 74hc138pw: hero from the plain model · Ray
74hc138pw-hero.overlay.json 74hc138pw: hero from the plain model · Ray
74hc138pw.glb Publish 0.1.0 · Ray
74hc138pw.kicad_mod Publish 0.1.0 · Ray
74hc138pw.kicad_sym Publish 0.1.0 · Ray
74hc138pw.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
74hc138pw.step Publish 0.1.0 · Ray
package.json Publish 0.2.1 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json Publish 0.2.1 · Ray
README.md 74hc138pw: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

74HC138PW

Nexperia · Signal Switches / Encoders & Decoders / Multiplexers · TSSOP-16

74HC138PW from Nexperia, in a TSSOP-16. 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 A0 input Address input 0 (LSB). Binary-weighted select input to the 3-to-8 decoder.
2 A1 input Address input 1. Binary-weighted select input to the 3-to-8 decoder.
3 A2 input Address input 2 (MSB). Binary-weighted select input to the 3-to-8 decoder.
4 E1 input Enable input 1, active LOW. All outputs are forced HIGH when E1 is HIGH.
5 E2 input Enable input 2, active LOW. All outputs are forced HIGH when E2 is HIGH.
6 E3 input Enable input 3, active HIGH. All outputs are forced HIGH when E3 is LOW.
7 Y7 output Decoded output 7, active LOW. Asserts LOW when A2:A0 = 111 and all enables are active.
8 GND power_in Ground reference (0 V).
9 Y6 output Decoded output 6, active LOW. Asserts LOW when A2:A0 = 110 and all enables are active.
10 Y5 output Decoded output 5, active LOW. Asserts LOW when A2:A0 = 101 and all enables are active.
11 Y4 output Decoded output 4, active LOW. Asserts LOW when A2:A0 = 100 and all enables are active.
12 Y3 output Decoded output 3, active LOW. Asserts LOW when A2:A0 = 011 and all enables are active.
13 Y2 output Decoded output 2, active LOW. Asserts LOW when A2:A0 = 010 and all enables are active.
14 Y1 output Decoded output 1, active LOW. Asserts LOW when A2:A0 = 001 and all enables are active.
15 Y0 output Decoded output 0, active LOW. Asserts LOW when A2:A0 = 000 and all enables are active.
16 VCC power_in Supply voltage, 2.0 V to 6.0 V.

Key specifications

Parameter Value
Manufacturer Nexperia
Package TSSOP-16
Category Logic
Pins 16

Ordering variants

  • 74HC138PW
  • 74HC138PWD
  • 74HC138PWBQ

CAD (KiCad official)

  • Symbol: 74HC138PW
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: 74hc138pw-etched.step / 74hc138pw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74hc138pw.step / 74hc138pw.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
74hc138pw.step 205 KB You want the bare part, or you mark your own boards.
74hc138pw-etched.step 2.2 MB You want the part with 74HC138PW already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 558 faces against 255 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: Nexperia datasheet (15 pp, sha256 645120bc441507e9, 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