component

MC74ACT244DTR2G

Public Made by Adom

by adom

onsemi Buffer/Driver/Transceiver, ETSSOP-20. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentlogicmc74act244dtr2g
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Contents

README

markdown

MC74ACT244DTR2G

onsemi · Buffer/Driver/Transceiver · ETSSOP-20

MC74ACT244DTR2G from onsemi, in a ETSSOP-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 ~{OE1} input Active-low output enable for bank 1 (drives outputs 1Y1-1Y4 on pins 18, 16, 14, 12). LOW = outputs follow inputs; HIGH = outputs are high-impedance (Z).
2 1A1 input Bank 1 data input 1. Buffered through to 1Y1 (pin 18) when /OE1 is LOW.
3 2Y4 tri_state Bank 2 3-state output 4. Reflects 2A4 (pin 17) when /OE2 is LOW; high-impedance when /OE2 is HIGH. Sources/sinks up to 24 mA.
4 1A2 input Bank 1 data input 2. Buffered through to 1Y2 (pin 16) when /OE1 is LOW.
5 2Y3 tri_state Bank 2 3-state output 3. Reflects 2A3 (pin 15) when /OE2 is LOW; high-impedance when /OE2 is HIGH.
6 1A3 input Bank 1 data input 3. Buffered through to 1Y3 (pin 14) when /OE1 is LOW.
7 2Y2 tri_state Bank 2 3-state output 2. Reflects 2A2 (pin 13) when /OE2 is LOW; high-impedance when /OE2 is HIGH.
8 1A4 input Bank 1 data input 4. Buffered through to 1Y4 (pin 12) when /OE1 is LOW.
9 2Y1 tri_state Bank 2 3-state output 1. Reflects 2A1 (pin 11) when /OE2 is LOW; high-impedance when /OE2 is HIGH.
10 GND power_in Ground reference (0 V) for logic and outputs.
11 2A1 input Bank 2 data input 1. Buffered through to 2Y1 (pin 9) when /OE2 is LOW.
12 1Y4 tri_state Bank 1 3-state output 4. Reflects 1A4 (pin 8) when /OE1 is LOW; high-impedance when /OE1 is HIGH.
13 2A2 input Bank 2 data input 2. Buffered through to 2Y2 (pin 7) when /OE2 is LOW.
14 1Y3 tri_state Bank 1 3-state output 3. Reflects 1A3 (pin 6) when /OE1 is LOW; high-impedance when /OE1 is HIGH.
15 2A3 input Bank 2 data input 3. Buffered through to 2Y3 (pin 5) when /OE2 is LOW.
16 1Y2 tri_state Bank 1 3-state output 2. Reflects 1A2 (pin 4) when /OE1 is LOW; high-impedance when /OE1 is HIGH.
17 2A4 input Bank 2 data input 4. Buffered through to 2Y4 (pin 3) when /OE2 is LOW.
18 1Y1 tri_state Bank 1 3-state output 1. Reflects 1A1 (pin 2) when /OE1 is LOW; high-impedance when /OE1 is HIGH.
19 ~{OE2} input Active-low output enable for bank 2 (drives outputs 2Y1-2Y4 on pins 9, 7, 5, 3). LOW = outputs follow inputs; HIGH = outputs are high-impedance (Z).
20 VCC power_in Supply voltage. Recommended 4.5-5.5 V for 'ACT variant (TTL-compatible inputs). Absolute max -0.5 to +7.0 V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • MC74ACT244DTR2G
  • MC74ACT244DTR2GDWG
  • MC74ACT244DTR2GDWR2G

CAD (KiCad official)

  • Symbol: MC74ACT244DTR2G
  • Footprint: Package_SO:ETSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP3x4.2mm
  • 3D model: ETSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: mc74act244dtr2g-etched.step / mc74act244dtr2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc74act244dtr2g.step / mc74act244dtr2g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 b452f9bb0cbf3736, 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