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PCA9534DWR

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Texas Instruments I/O Expanders, SOIC-16-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PCA9534DWR

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

PCA9534DWR 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; logic-high input requires at least 0.7 × VCC and logic-low input is at most 0.3 × VCC.
2 A1 input Address input that must be connected directly to VCC or ground; logic-high input requires at least 0.7 × VCC and logic-low input is at most 0.3 × VCC.
3 A2 input Address input that must be connected directly to VCC or ground; logic-high input requires at least 0.7 × VCC and logic-low input is at most 0.3 × VCC.
4 P0 bidirectional P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V.
5 P1 bidirectional P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V.
6 P2 bidirectional P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V.
7 P3 bidirectional P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V.
8 GND power_in Ground reference for the device.
9 P4 bidirectional P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V.
10 P5 bidirectional P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V.
11 P6 bidirectional P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V.
12 P7 bidirectional P-port input/output with push-pull structure; output low current is up to 25 mA and output high current is up to -10 mA, with inputs tolerant to 5.5 V.
13 INT output Open-drain, active-low interrupt output that must be connected to VCC through a pullup resistor; it asserts when any input differs from its input port register state.
14 SCL input I2C serial clock bus that must be connected to VCC through a pullup resistor; SCL input high requires at least 0.7 × VCC.
15 SDA bidirectional I2C serial data bus that must be connected to VCC through a pullup resistor; SDA input high requires at least 0.7 × VCC.
16 VCC power_in Supply voltage, operating range 2.3 V to 5.5 V.

Key specifications

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

CAD (KiCad official)

  • Symbol: PCA9534DWR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
  • 3D model files: pca9534dwr-etched.step / pca9534dwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pca9534dwr.step / pca9534dwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (47 pp, sha256 a14499561793e160, 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