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SN74HC244N

Public Made by Adom

by adom

Texas Instruments Buffers, Drivers, Receivers, Transceivers, DIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

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SN74HC244N

Texas Instruments · Buffers, Drivers, Receivers, Transceivers · DIP-20

SN74HC244N from Texas Instruments, in a DIP-20. 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 1OE input Output enable input for buffer 1; active low enables outputs 1Y1-1Y4
2 1A1 input Input A1 to first 4-bit buffer
3 2Y4 tri_state Tri-state output Y4 from second 4-bit buffer
4 1A2 input Input A2 to first 4-bit buffer
5 2Y3 tri_state Tri-state output Y3 from second 4-bit buffer
6 1A3 input Input A3 to first 4-bit buffer
7 2Y2 tri_state Tri-state output Y2 from second 4-bit buffer
8 1A4 input Input A4 to first 4-bit buffer
9 2Y1 tri_state Tri-state output Y1 from second 4-bit buffer
10 GND power_in Ground connection
11 2A1 input Input A1 to second 4-bit buffer
12 1Y4 tri_state Tri-state output Y4 from first 4-bit buffer
13 2A2 input Input A2 to second 4-bit buffer
14 1Y3 tri_state Tri-state output Y3 from first 4-bit buffer
15 2A3 input Input A3 to second 4-bit buffer
16 1Y2 tri_state Tri-state output Y2 from first 4-bit buffer
17 2A4 input Input A4 to second 4-bit buffer
18 1Y1 tri_state Tri-state output Y1 from first 4-bit buffer
19 2OE input Output enable input for buffer 2; active low enables outputs 2Y1-2Y4
20 VCC power_in Power supply, 2V to 6V operating range

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package DIP-20
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: SN74HC244N
  • Footprint: Package_DIP:DIP-20_W7.62mm
  • 3D model: DIP-20 (KiCad packages3D, STEP)
  • 3D model files: sn74hc244n-etched.step / sn74hc244n-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74hc244n.step / sn74hc244n.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (41 pp, sha256 75f58a56722eea30, retrieved 2026-09-26, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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