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TCA9534DWR

Texas Instruments · I/O Expanders · SOIC-16-300mil

TCA9534DWR from Texas Instruments, in a SOIC-16-300mil. 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 A0 input Address input that must be connected directly to VCC or ground.
2 A1 input Address input that must be connected directly to VCC or ground.
3 A2 input Address input that must be connected directly to VCC or ground.
4 P0 bidirectional P-port input/output with push-pull structure; configured as an input at power-on.
5 P1 bidirectional P-port input/output with push-pull structure; configured as an input at power-on.
6 P2 bidirectional P-port input/output with push-pull structure; configured as an input at power-on.
7 P3 bidirectional P-port input/output with push-pull structure; configured as an input at power-on.
8 GND power_in Ground reference.
9 P4 bidirectional P-port input/output with push-pull structure; configured as an input at power-on.
10 P5 bidirectional P-port input/output with push-pull structure; configured as an input at power-on.
11 P6 bidirectional P-port input/output with push-pull structure; configured as an input at power-on.
12 P7 bidirectional P-port input/output with push-pull structure; configured as an input at power-on.
13 INT output Interrupt output, active low per the features list; connect to VCC through a pullup resistor.
14 SCL bidirectional I2C/SMBus serial clock bus; connect to VCC through a pullup resistor.
15 SDA bidirectional I2C/SMBus serial data bus; connect to VCC through a pullup resistor.
16 VCC power_in Supply voltage; the device operates from 1.65 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-16-300mil
Category Interface
Pins 16

CAD (KiCad official)

  • Symbol: TCA9534DWR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
  • 3D model files: tca9534dwr-etched.step / tca9534dwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tca9534dwr.step / tca9534dwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (42 pp, sha256 4553073305b1078a, retrieved 2026-10-08, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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