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SN74ALVCH245PWR

Texas Instruments · Buffers, Drivers, Receivers, Transceivers · TSSOP-20

SN74ALVCH245PWR from Texas Instruments, 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 DIR input Direction control input; low selects B→A, high selects A→B data transmission.
2 A1 tri_state A-bus data I/O pin with 3-state output and bus-hold circuitry on input.
3 A2 tri_state A-bus data I/O pin with 3-state output and bus-hold circuitry on input.
4 A3 tri_state A-bus data I/O pin with 3-state output and bus-hold circuitry on input.
5 A4 tri_state A-bus data I/O pin with 3-state output and bus-hold circuitry on input.
6 A5 tri_state A-bus data I/O pin with 3-state output and bus-hold circuitry on input.
7 A6 tri_state A-bus data I/O pin with 3-state output and bus-hold circuitry on input.
8 A7 tri_state A-bus data I/O pin with 3-state output and bus-hold circuitry on input.
9 A8 tri_state A-bus data I/O pin with 3-state output and bus-hold circuitry on input.
10 GND power_in Ground, supply return path.
11 B8 tri_state B-bus data I/O pin with 3-state output and bus-hold circuitry on input.
12 B7 tri_state B-bus data I/O pin with 3-state output and bus-hold circuitry on input.
13 B6 tri_state B-bus data I/O pin with 3-state output and bus-hold circuitry on input.
14 B5 tri_state B-bus data I/O pin with 3-state output and bus-hold circuitry on input.
15 B4 tri_state B-bus data I/O pin with 3-state output and bus-hold circuitry on input.
16 B3 tri_state B-bus data I/O pin with 3-state output and bus-hold circuitry on input.
17 B2 tri_state B-bus data I/O pin with 3-state output and bus-hold circuitry on input.
18 B1 tri_state B-bus data I/O pin with 3-state output and bus-hold circuitry on input.
19 OE input Output enable control input (active low); places outputs in high impedance when high, isolating the buses.
20 VCC power_in Positive supply voltage input; operating range 1.65 V to 3.6 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-20
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: SN74ALVCH245PWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: sn74alvch245pwr-etched.step / sn74alvch245pwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74alvch245pwr.step / sn74alvch245pwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (18 pp, sha256 1ad72c67e1aa5cde, retrieved 2026-10-07, tier: manufacturer)
  • 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