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SN74AHCT245DWR

Texas Instruments · Buffers, Drivers, Receivers, Transceivers · SOIC-20-300mil

SN74AHCT245DWR from Texas Instruments, in a SOIC-20-300mil. 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 DIR input Direction control input.
2 A1 bidirectional Bidirectional bus A data line 1, TTL-compatible input.
3 A2 bidirectional Bidirectional bus A data line 2, TTL-compatible input.
4 A3 bidirectional Bidirectional bus A data line 3, TTL-compatible input.
5 A4 bidirectional Bidirectional bus A data line 4, TTL-compatible input.
6 A5 bidirectional Bidirectional bus A data line 5, TTL-compatible input.
7 A6 bidirectional Bidirectional bus A data line 6, TTL-compatible input.
8 A7 bidirectional Bidirectional bus A data line 7, TTL-compatible input.
9 A8 bidirectional Bidirectional bus A data line 8, TTL-compatible input.
10 GND power_in Ground reference connection.
11 B8 bidirectional Bidirectional bus B data line 8, 3-state output.
12 B7 bidirectional Bidirectional bus B data line 7, 3-state output.
13 B6 bidirectional Bidirectional bus B data line 6, 3-state output.
14 B5 bidirectional Bidirectional bus B data line 5, 3-state output.
15 B4 bidirectional Bidirectional bus B data line 4, 3-state output.
16 B3 bidirectional Bidirectional bus B data line 3, 3-state output.
17 B2 bidirectional Bidirectional bus B data line 2, 3-state output.
18 B1 bidirectional Bidirectional bus B data line 1, 3-state output.
19 OE input Output enable control input.
20 VCC power_in Positive power supply, operating range 4.5V to 5.5V.

Key specifications

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

CAD (KiCad official)

  • Symbol: SN74AHCT245DWR
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: sn74ahct245dwr-etched.step / sn74ahct245dwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ahct245dwr.step / sn74ahct245dwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (41 pp, sha256 9e1ded06a2c7c7a2, retrieved 2026-10-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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