component

74HC125D

Public Made by Adom

by adom

Nexperia Buffer/Driver/Transceiver, SOIC-14. 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 74hc125d: 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
74hc125d-etched.fit.json 74hc125d: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
74hc125d-etched.glb 74hc125d: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body wi… · Ray
74hc125d-etched.step 74hc125d: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body wi… · Ray
74hc125d-hero.glb 74hc125d: hero from the plain model · Ray
74hc125d-hero.overlay.json 74hc125d: hero from the plain model · Ray
74hc125d.glb Publish 0.1.0 · Ray
74hc125d.kicad_mod Publish 0.1.0 · Ray
74hc125d.kicad_sym Publish 0.1.0 · Ray
74hc125d.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
74hc125d.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 74hc125d: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

74HC125D

Nexperia · Buffer/Driver/Transceiver · SOIC-14

74HC125D from Nexperia, in a SOIC-14. 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 1OE input Output enable input for buffer 1 (active LOW). A LOW enables buffer 1 to pass 1A to 1Y; a HIGH places 1Y into high-impedance state.
2 1A input Data input for buffer 1. CMOS-level input (74HC125) or TTL-level input (74HCT125); VI range 0 V to VCC.
3 1Y tri_state Data output for buffer 1. 3-state output; drives typically ±6 mA at VCC = 4.5 V. High-Z when 1OE is HIGH.
4 2OE input Output enable input for buffer 2 (active LOW). A LOW enables 2A to 2Y; a HIGH places 2Y into high-impedance state.
5 2A input Data input for buffer 2. CMOS/TTL logic input; VI range 0 V to VCC.
6 2Y tri_state Data output for buffer 2. 3-state output controlled by 2OE.
7 GND power_in Ground reference (0 V).
8 3Y tri_state Data output for buffer 3. 3-state output controlled by 3OE.
9 3A input Data input for buffer 3. CMOS/TTL logic input; VI range 0 V to VCC.
10 3OE input Output enable input for buffer 3 (active LOW). A LOW enables 3A to 3Y; a HIGH places 3Y into high-impedance state.
11 4Y tri_state Data output for buffer 4. 3-state output controlled by 4OE.
12 4A input Data input for buffer 4. CMOS/TTL logic input; VI range 0 V to VCC.
13 4OE input Output enable input for buffer 4 (active LOW). A LOW enables 4A to 4Y; a HIGH places 4Y into high-impedance state.
14 VCC power_in Positive supply voltage. 74HC125: 2.0 V to 6.0 V. 74HCT125: 4.5 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOIC-14
Category Logic
Pins 14

Ordering variants

  • 74HC125DD
  • 74HC125DPW

CAD (KiCad official)

  • Symbol: 74HC125D
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D, STEP)
  • 3D model files: 74hc125d-etched.step / 74hc125d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74hc125d.step / 74hc125d.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
74hc125d.step 195 KB You want the bare part, or you mark your own boards.
74hc125d-etched.step 1.8 MB You want the part with 74HC125D already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 473 faces against 237 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 (13 pp, sha256 3b5da3a3dcae2624, 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