# PCA9538D (Component)

## Description

8\-bit I/O expander, I2C / SMBus interface, interrupt and reset pins, SOIC\-16
NXP IO\-expander
SO\*3\.9x9\.9mm?P1\.27mm\* 

## Component Details

- **Owner:** kicad\-part\-library
- **Created:** 10/28/2026
- **Last Updated:** 10/28/2026
- **Visibility:** Public
- **Part Type:** Interface
- **Manufacturer Name:** NXP
- **Datasheet URL:** https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/650e97120fbad4e890746af51c94ba4c4ed02d2d2c8449ffebc77bcd5f9c7633\.pdf
- **Package or Case Code:** SO\-16\_3\.9x9\.9mm\_P1\.27mm
- **Manufacturer Part Number:** PCA9538D

- **Part Type:** Integrated Circuits
- **Sub-Type:** Logic
- **Manufacturer:** NXP
- **MPN:** PCA9538D
- **Package / Case Code:** 16\-SOIC
- **Pin Count:** 16
## Pins

| Pin | Name | Type |
|-----|------|------|
| 1 | A0 | Input |
| 2 | A1 | Input |
| 3 | \~\{RESET\} | Input |
| 4 | IO0 | Bi\-Directional |
| 5 | IO1 | Bi\-Directional |
| 6 | IO2 | Bi\-Directional |
| 7 | IO3 | Bi\-Directional |
| 8 | V\_\{SS\} | Power In |
| 9 | IO4 | Bi\-Directional |
| 10 | IO5 | Bi\-Directional |
| 11 | IO6 | Bi\-Directional |
| 12 | IO7 | Bi\-Directional |
| 13 | \~\{INT\} | Open Collector |
| 14 | SCL | Input |
| 15 | SDA | Bi\-Directional |
| 16 | V\_\{DD\} | Power In |

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*Generated from [https://flux\.ai/kicad\-part\-library/pca9538d\~ccz](https://flux.ai/kicad-part-library/pca9538d~ccz)*