component
PCA9534DWR
Public Made by Adomby adom
Texas Instruments I/O Expanders, SOIC-16-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownPCA9534DWR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pca9534dwr.step/pca9534dwr.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).