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SN74ABT244AMDBREP

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Texas Instruments Buffers, Drivers, Receivers, Transceivers, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74ABT244AMDBREP

Texas Instruments · Buffers, Drivers, Receivers, Transceivers · SSOP-20-208mil

SN74ABT244AMDBREP from Texas Instruments, in a SSOP-20-208mil. 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 Active-low output enable for the first 4-bit buffer; when low the 1Y outputs follow the 1A inputs, and when high they go to the high-impedance state, so it should be tied to VCC through a pullup resistor to keep the outputs high-impedance during power up or power down.
2 1A1 input Data input 1A1 of the first buffer; VIH minimum 2 V and VIL maximum 0.8 V, and unused inputs must be held high or low.
3 2Y4 tri_state Output 2Y4 of the second buffer, rated for high drive at IOH -24 mA and IOL 48 mA, and in the high-impedance state when 2OE is high.
4 1A2 input Data input 1A2 of the first buffer; VIH minimum 2 V and VIL maximum 0.8 V, and unused inputs must be held high or low.
5 2Y3 tri_state Output 2Y3 of the second buffer, rated for high drive at IOH -24 mA and IOL 48 mA, and in the high-impedance state when 2OE is high.
6 1A3 input Data input 1A3 of the first buffer; VIH minimum 2 V and VIL maximum 0.8 V, and unused inputs must be held high or low.
7 2Y2 tri_state Output 2Y2 of the second buffer, rated for high drive at IOH -24 mA and IOL 48 mA, and in the high-impedance state when 2OE is high.
8 1A4 input Data input 1A4 of the first buffer; VIH minimum 2 V and VIL maximum 0.8 V, and unused inputs must be held high or low.
9 2Y1 tri_state Output 2Y1 of the second buffer, rated for high drive at IOH -24 mA and IOL 48 mA, and in the high-impedance state when 2OE is high.
10 GND power_in Device ground reference; the datasheet gives no separate ground pin limit.
11 2A1 input Data input 2A1 of the second buffer; VIH minimum 2 V and VIL maximum 0.8 V, and unused inputs must be held high or low.
12 1Y4 tri_state Output 1Y4 of the first buffer, rated for high drive at IOH -24 mA and IOL 48 mA, and in the high-impedance state when 1OE is high.
13 2A2 input Data input 2A2 of the second buffer; VIH minimum 2 V and VIL maximum 0.8 V, and unused inputs must be held high or low.
14 1Y3 tri_state Output 1Y3 of the first buffer, rated for high drive at IOH -24 mA and IOL 48 mA, and in the high-impedance state when 1OE is high.
15 2A3 input Data input 2A3 of the second buffer; VIH minimum 2 V and VIL maximum 0.8 V, and unused inputs must be held high or low.
16 1Y2 tri_state Output 1Y2 of the first buffer, rated for high drive at IOH -24 mA and IOL 48 mA, and in the high-impedance state when 1OE is high.
17 2A4 input Data input 2A4 of the second buffer; VIH minimum 2 V and VIL maximum 0.8 V, and unused inputs must be held high or low.
18 1Y1 tri_state Output 1Y1 of the first buffer, rated for high drive at IOH -24 mA and IOL 48 mA, and in the high-impedance state when 1OE is high.
19 2OE input Active-low output enable for the second 4-bit buffer; when low the 2Y outputs follow the 2A inputs, and when high they go to the high-impedance state, so it should be tied to VCC through a pullup resistor to keep the outputs high-impedance during power up or power down.
20 VCC power_in Supply voltage, recommended operating range 4.5 V to 5.5 V with an absolute maximum of 7 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-20-208mil
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: SN74ABT244AMDBREP
  • Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
  • 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
  • 3D model files: sn74abt244amdbrep-etched.step / sn74abt244amdbrep-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74abt244amdbrep.step / sn74abt244amdbrep.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (13 pp, sha256 c2ce702588c9d2d1, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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