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74VHC244MTC

Public Made by Adom

by adom

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

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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74VHC244MTC

onsemi · Buffers, Drivers, Receivers, Transceivers · TSSOP-20

74VHC244MTC from onsemi, in a TSSOP-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 OE1 input Active-LOW 3-STATE output enable input for outputs O0-O3 (pins 12, 14, 16, 18).
2 I0 input Buffer input 0, drives output O0 (pin 18) when OE1 is LOW.
3 O4 tri_state 3-STATE buffer output 4, follows I4 when OE2 is LOW and is high impedance when OE2 is HIGH.
4 I1 input Buffer input 1, drives output O1 (pin 16) when OE1 is LOW.
5 O5 tri_state 3-STATE buffer output 5, follows I5 when OE2 is LOW and is high impedance when OE2 is HIGH.
6 I2 input Buffer input 2, drives output O2 (pin 14) when OE1 is LOW.
7 O6 tri_state 3-STATE buffer output 6, follows I6 when OE2 is LOW and is high impedance when OE2 is HIGH.
8 I3 input Buffer input 3, drives output O3 (pin 12) when OE1 is LOW.
9 O7 tri_state 3-STATE buffer output 7, follows I7 when OE2 is LOW and is high impedance when OE2 is HIGH.
10 GND power_in Ground.
11 I7 input Buffer input 7, drives output O7 (pin 9) when OE2 is LOW.
12 O3 tri_state 3-STATE buffer output 3, follows I3 when OE1 is LOW and is high impedance when OE1 is HIGH.
13 I6 input Buffer input 6, drives output O6 (pin 7) when OE2 is LOW.
14 O2 tri_state 3-STATE buffer output 2, follows I2 when OE1 is LOW and is high impedance when OE1 is HIGH.
15 I5 input Buffer input 5, drives output O5 (pin 5) when OE2 is LOW.
16 O1 tri_state 3-STATE buffer output 1, follows I1 when OE1 is LOW and is high impedance when OE1 is HIGH.
17 I4 input Buffer input 4, drives output O4 (pin 3) when OE2 is LOW.
18 O0 tri_state 3-STATE buffer output 0, follows I0 when OE1 is LOW and is high impedance when OE1 is HIGH.
19 OE2 input Active-LOW 3-STATE output enable input for outputs O4-O7 (pins 3, 5, 7, 9).
20 VCC power_in Positive supply voltage.

Key specifications

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

CAD (KiCad official)

  • Symbol: 74VHC244MTC
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: 74vhc244mtc-etched.step / 74vhc244mtc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74vhc244mtc.step / 74vhc244mtc.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (10 pp, sha256 70dde42bac97d583, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (vision), consensus claude-opus-5-5 (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