# CAT9555YI-T2 (Component)
## Description
I/O Expander 16 I2C, SMBus 400 kHz 24-TSSOP #commonpartslibrary
#integratedcircuit
#ioexpander
## Component Details
- **Owner:** adrian95
- **Created:** 8/26/2024
- **Last Updated:** 8/26/2024
- **Visibility:** Public
- **Datasheet URL:** https://www.onsemi.com/pdf/datasheet/cat9555-d.pdf
- **Manufacturer Name:** onsemi
- **License:** https://creativecommons.org/licenses/by/4.0/
- **Manufacturer Part Number:** CAT9555YI-T2
- **Part Type:** Integrated Circuit
- **Used in:** 1 project
## 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/cat9555yi-t2/on-semiconductor?utm_currency=USD®ion=nac) | $1.3146 | 2K |
| [HQonline](https://www.hqonline.com/product-detail/i-o-expanders-on-cat9555yi-t2-2500409802) | $0.94348 | 11 |
| [LCSC](https://www.lcsc.com/product-detail/C83265.html) | $1.0232 | 6.3K |
| [Mouser](https://www.mouser.com/ProductDetail/onsemi/CAT9555YI-T2?qs=2NH5YejJASyZ5x6UgE6UFg%3D%3D) | $1.43 | 12K |
| [Verical](https://www.verical.com/pd/on-semiconductor-interface---i-o-expander-CAT9555YI-T2-562489?utm_currency=USD) | N/A | N/A |
- **Part Type:** Integrated Circuits
- **Sub-Type:** Logic
- **Manufacturer:** ON Semiconductor
- **MPN:** CAT9555YI-T2
- **Package / Case Code:** 16-TSSOP
- **Pin Count:** 24
- **Logic Function:** AND
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | ~INT | |
| 2 | A1 | |
| 3 | A2 | |
| 4 | I/O0.0 | |
| 5 | I/O0.1 | |
| 6 | I/O0.2 | |
| 7 | I/O0.3 | |
| 8 | I/O0.4 | |
| 9 | I/O0.5 | |
| 10 | I/O0.6 | |
| 11 | I/O0.7 | |
| 12 | VSS | |
| 13 | I/O1.0 | |
| 14 | I/O1.1 | |
| 15 | I/O1.2 | |
| 16 | I/O1.3 | |
| 17 | I/O1.4 | |
| 18 | I/O1.5 | |
| 19 | I/O1.6 | |
| 20 | I/O1.7 | |
| 21 | A0 | |
| 22 | SCL | |
| 23 | SDA | |
| 24 | VCC | |
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*Generated from [https://www.flux.ai/adrian95/cat9555yi-t2~dlp](https://www.flux.ai/adrian95/cat9555yi-t2~dlp)*