component

74HC244PW

Public Made by Adom

by adom

Nexperia Buffer/Driver/Transceiver, TSSOP-20. 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 74hc244pw: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
74hc244pw-etched.fit.json 74hc244pw: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
74hc244pw-etched.glb 74hc244pw: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body w… · Ray 15d ago
74hc244pw-etched.step 74hc244pw: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body w… · Ray 15d ago
74hc244pw.glb Publish 0.1.0 · Ray 2mo ago
74hc244pw.kicad_mod Publish 0.1.0 · Ray 2mo ago
74hc244pw.kicad_sym Publish 0.1.0 · Ray 2mo ago
74hc244pw.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 2mo ago
74hc244pw.step Publish 0.1.0 · Ray 2mo ago
package.json Publish 0.2.0 · Ray 2mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
page.json 74hc244pw: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body w… · Ray 15d ago
README.md 74hc244pw: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

74HC244PW

Nexperia · Buffer/Driver/Transceiver · TSSOP-20

74HC244PW from Nexperia, 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 1OE input Active-LOW output enable for bank 1 (drives 1Y0-1Y3). HIGH forces 1Y0-1Y3 into high-impedance OFF-state.
2 1A0 input Bank 1 data input 0. CMOS-level input (VIH ~0.7*VCC).
3 2Y0 tri_state Bank 2 bus output 0, non-inverting buffer of 2A0. High-Z when 2OE is HIGH. Drives up to ±7.8 mA at VCC = 6 V.
4 1A1 input Bank 1 data input 1.
5 2Y1 tri_state Bank 2 bus output 1, non-inverting buffer of 2A1. High-Z when 2OE is HIGH.
6 1A2 input Bank 1 data input 2.
7 2Y2 tri_state Bank 2 bus output 2, non-inverting buffer of 2A2. High-Z when 2OE is HIGH.
8 1A3 input Bank 1 data input 3.
9 2Y3 tri_state Bank 2 bus output 3, non-inverting buffer of 2A3. High-Z when 2OE is HIGH.
10 GND power_in Ground reference (0 V).
11 2A3 input Bank 2 data input 3.
12 1Y3 tri_state Bank 1 bus output 3, non-inverting buffer of 1A3. High-Z when 1OE is HIGH.
13 2A2 input Bank 2 data input 2.
14 1Y2 tri_state Bank 1 bus output 2, non-inverting buffer of 1A2. High-Z when 1OE is HIGH.
15 2A1 input Bank 2 data input 1.
16 1Y1 tri_state Bank 1 bus output 1, non-inverting buffer of 1A1. High-Z when 1OE is HIGH.
17 2A0 input Bank 2 data input 0.
18 1Y0 tri_state Bank 1 bus output 0, non-inverting buffer of 1A0. High-Z when 1OE is HIGH.
19 2OE input Active-LOW output enable for bank 2 (drives 2Y0-2Y3). HIGH forces 2Y0-2Y3 into high-impedance OFF-state.
20 VCC power_in Supply voltage. 2.0-6.0 V for 74HC244 (4.5-5.5 V for 74HCT244). ICC typically 8 uA at VCC = 6 V.

Key specifications

Parameter Value
Manufacturer Nexperia
Package TSSOP-20
Category Logic
Pins 20

Ordering variants

  • 74HC244PW
  • 74HC244PWD
  • 74HC244PWBQ

CAD (KiCad official)

  • Symbol: 74HC244PW
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: 74hc244pw-etched.step / 74hc244pw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74hc244pw.step / 74hc244pw.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
74hc244pw.step 267 KB You want the bare part, or you mark your own boards.
74hc244pw-etched.step 2.2 MB You want the part with 74HC244PW already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 576 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: Nexperia datasheet (15 pp, sha256 7d5786046ad334eb, 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