# PCA9557PW (Component)
## Description
8-bit I2C-bus and SMBus I/O port with reset, TSSOP-16
SMBUS I2C Expander
TSSOP*4.4x5mm*P0.65mm*
## Component Details
- **Owner:** kicad-part-library
- **Created:** 9/27/2024
- **Last Updated:** 9/27/2024
- **Visibility:** Public
- **Manufacturer Part Number:** PCA9557PW
- **Manufacturer Name:** NXP Semiconductors NV
- **Datasheet URL:** https://www.nxp.com/docs/en/data-sheet/PCA9557.pdf
- **Package or Case Code:** TSSOP-16_4.4x5mm_P0.65mm
## Distributor Pricing (qty 1)
*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*
| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/pca9557pw/texas-instruments.html?utm_currency=USD®ion=asia) | N/A | N/A |
| [Digi-Key](https://www.digikey.com/en/products/detail/texas-instruments/PCA9557PW/1576708) | $1.87 | 598 |
| [LCSC](https://www.lcsc.com/product-detail/C1542488.html) | $1.1073 | 0 |
| [Mouser](https://www.mouser.com/ProductDetail/Texas-Instruments/PCA9557PW?qs=fJz2RDGtR43DBFSaCOA1SQ%3D%3D) | $1.96 | 8.6K |
| [Verical](https://www.verical.com/pd/texas-instruments-interface---i-o-expander-PCA9557PW-49600?utm_currency=USD) | N/A | N/A |
- **Manufacturer:** NXP
- **MPN:** PCA9557PW
- **Package / Case Code:** 16-TSSOP
- **Pin Count:** 16
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | SCL | |
| 2 | SDA | |
| 3 | A0 | |
| 4 | A1 | |
| 5 | A2 | |
| 6 | IO0 | |
| 7 | IO1 | |
| 8 | VSS | |
| 9 | IO2 | |
| 10 | IO3 | |
| 11 | IO4 | |
| 12 | IO5 | |
| 13 | IO6 | |
| 14 | IO7 | |
| 15 | ~{RESET} | |
| 16 | VDD | |
---
*Generated from [https://www.flux.ai/kicad-part-library/pca9557pw~gg](https://www.flux.ai/kicad-part-library/pca9557pw~gg)*