# PCA9555D,112 (Component)
## Description
I/O Expander 16 I2C, SMBus 400 kHz 24-SO #commonpartslibrary
#integratedcircuit
#ioexpander
## Component Details
- **Owner:** adrian95
- **Created:** 4/12/2025
- **Last Updated:** 4/12/2025
- **Visibility:** Public
- **Part Type:** Integrated Circuit
- **Datasheet URL:** https://www.nxp.com/docs/en/data-sheet/PCA9555.pdf
- **Manufacturer Part Number:** PCA9555D,112
- **License:** https://creativecommons.org/licenses/by/4.0/
- **Package or Case Code:** SOIC127P1032X265-24N
- **Manufacturer Name:** NXP
## 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/pca9555d112/nxp-semiconductors.html?utm_currency=USD®ion=europe) | $1.8074 | 12K |
| [Digi-Key](https://www.digikey.com/en/products/detail/nxp-usa-inc/PCA9555D-112/735670) | $2.18 | 201 |
| [LCSC](https://www.lcsc.com/product-detail/C1542498.html) | $1.8903 | 0 |
| [Mouser](https://www.mouser.com/ProductDetail/NXP-Semiconductors/PCA9555D112?qs=LOCUfHb8d9uHLVy69SymwQ%3D%3D) | $2.18 | 3.1K |
| [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=PCA9555D.112) | $2.08 | 30 |
| [Verical](https://www.verical.com/pd/nxp-semiconductors-interface---i-o-expander-PCA9555D-112-1839344?utm_currency=USD) | N/A | N/A |
- **Part Type:** Integrated Circuits
- **Sub-Type:** Logic
- **Manufacturer:** NXP
- **MPN:** PCA9555D,112
- **Package / Case Code:** 16-SO
- **Pin Count:** 24
- **Logic Function:** AND
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | ~INT | |
| 2 | A1 | |
| 3 | A2 | |
| 4 | IO0_0 | |
| 5 | IO0_1 | |
| 6 | IO0_2 | |
| 7 | IO0_3 | |
| 8 | IO0_4 | |
| 9 | IO0_5 | |
| 10 | IO0_6 | |
| 11 | IO0_7 | |
| 12 | VSS | |
| 13 | IO1_0 | |
| 14 | IO1_1 | |
| 15 | IO1_2 | |
| 16 | IO1_3 | |
| 17 | IO1_4 | |
| 18 | IO1_5 | |
| 19 | IO1_6 | |
| 20 | IO1_7 | |
| 21 | A0 | |
| 22 | SCL | |
| 23 | SDA | |
| 24 | VDD | |
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*Generated from [https://www.flux.ai/adrian95/pca9555dc112~4s8](https://www.flux.ai/adrian95/pca9555dc112~4s8)*