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74HCT244D

Public Made by Adom

by adom

Nexperia Buffers, Drivers, Receivers, Transceivers, SOIC-20-300mil. Datasheet-verified pinout, 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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74HCT244D

Nexperia · Buffers, Drivers, Receivers, Transceivers · SOIC-20-300mil

74HCT244D from Nexperia, in a SOIC-20-300mil. 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 (active LOW) for first buffer stage (1Y0-1Y3); HIGH forces outputs to high-impedance state.
2 1A0 input Data input for first buffer stage, bit 0.
3 2Y0 tri_state 3-state bus output of second buffer stage, bit 0; driven when 2OE is LOW.
4 1A1 input Data input for first buffer stage, bit 1.
5 2Y1 tri_state 3-state bus output of second buffer stage, bit 1; driven when 2OE is LOW.
6 1A2 input Data input for first buffer stage, bit 2.
7 2Y2 tri_state 3-state bus output of second buffer stage, bit 2; driven when 2OE is LOW.
8 1A3 input Data input for first buffer stage, bit 3.
9 2Y3 tri_state 3-state bus output of second buffer stage, bit 3; driven when 2OE is LOW.
10 GND power_in Ground reference (0 V).
11 2A3 input Data input for second buffer stage, bit 3.
12 1Y3 tri_state 3-state bus output of first buffer stage, bit 3; driven when 1OE is LOW.
13 2A2 input Data input for second buffer stage, bit 2.
14 1Y2 tri_state 3-state bus output of first buffer stage, bit 2; driven when 1OE is LOW.
15 2A1 input Data input for second buffer stage, bit 1.
16 1Y1 tri_state 3-state bus output of first buffer stage, bit 1; driven when 1OE is LOW.
17 2A0 input Data input for second buffer stage, bit 0.
18 1Y0 tri_state 3-state bus output of first buffer stage, bit 0; driven when 1OE is LOW.
19 2OE input Output enable input (active LOW) for second buffer stage (2Y0-2Y3); HIGH forces outputs to high-impedance state.
20 VCC power_in Supply voltage; 4.5 V to 5.5 V operating range for 74HCT244.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOIC-20-300mil
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: 74HCT244D
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: 74hct244d-etched.step / 74hct244d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74hct244d.step / 74hct244d.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (15 pp, sha256 7d5786046ad334eb, retrieved 2026-09-22, tier: lcsc)
  • 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