# MCP23016\-I/SO (Component)

## Description

I/O Expander 16 I2C 400 kHz 28\-SOIC

16\-bit I²C I/O expander providing 16 configurable general\-purpose I/O pins in two 8\-bit ports\. Operates from 2\.0–5\.5 V, supports I²C clock rates up to 400 kHz, offers ±25 mA I/O drive capability, configurable input polarity, and an open\-drain interrupt output\. Suitable for expanding MCU I/O in applications such as LEDs, switches, sensors, and control interfaces\. \#I2C \#IOExpander \#GPIO \#Microcontroller \#Microchip

## Component Details

- **Owner:** silicon\-yard
- **Created:** 9/4/2026
- **Last Updated:** 9/4/2026
- **Visibility:** Public
- **License:** https://creativecommons\.org/licenses/by/4\.0/
- **Datasheet URL:** https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/25f4a68d67f95c65290e75e78221c5eb84ad5b9d687a5f0d8e78ea2bec129032\.pdf
- **Package or Case Code:** 28\-SOIC
- **Symbol Style:** parametric\-v1
- **Manufacturer Part Number:** MCP23016\-I/SO
- **Part Type:** Integrated Circuit
- **Manufacturer Name:** Microchip Technology

## 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/mcp23016-i-so/microchip-technology.html?utm_currency=USD&region=nac) | $1\.8649 | 0 |
| [Digi\-Key](https://www.digikey.com/en/products/detail/microchip-technology/MCP23016-I-SO/551892) | $2\.13 | 406 |
| [LCSC](https://www.lcsc.com/product-detail/C219882.html) | $2\.1001 | 0 |
| [Mouser](https://www.mouser.com/en/ProductDetail/Microchip-Technology/MCP23016-I-SO?qs=wJ05WdDZ4qQVn91ixIsFjA%253D%253D) | $2\.12 | 834 |
| [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=MCP23016-I%252FSO) | $2\.29 | 27 |
| [Verical](https://www.verical.com/pd/microchip-technology-interface---i-o-expander-MCP23016-I-SO-512521?utm_currency=USD) | N/A | N/A |

- **Part Type:** Integrated Circuits
- **Sub-Type:** Logic
- **Manufacturer:** Microchip
- **MPN:** MCP23016\-I/SO
- **Package / Case Code:** 28\-SOIC
- **Pin Count:** 28
- **Logic Function:** AND
## Pins

| Pin | Name | Type |
|-----|------|------|
| 1 | VSS\_1 | Unspecified |
| 2 | GP1\.0 | Unspecified |
| 3 | GP1\.1 | Unspecified |
| 4 | GP1\.2 | Unspecified |
| 5 | GP1\.3 | Unspecified |
| 6 | \~INT | Unspecified |
| 7 | GP1\.4 | Unspecified |
| 8 | VSS\_2 | Unspecified |
| 9 | CLK | Unspecified |
| 10 | TP | Unspecified |
| 11 | GP1\.5 | Unspecified |
| 12 | GP1\.6 | Unspecified |
| 13 | GP1\.7 | Unspecified |
| 14 | SCL | Unspecified |
| 15 | SDA | Unspecified |
| 16 | A0 | Unspecified |
| 17 | A1 | Unspecified |
| 18 | A2 | Unspecified |
| 19 | VSS\_3 | Unspecified |
| 20 | VDD | Unspecified |
| 21 | GP0\.0 | Unspecified |
| 22 | GP0\.1 | Unspecified |
| 23 | GP0\.2 | Unspecified |
| 24 | GP0\.3 | Unspecified |
| 25 | GP0\.4 | Unspecified |
| 26 | GP0\.5 | Unspecified |
| 27 | GP0\.6 | Unspecified |
| 28 | GP0\.7 | Unspecified |

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*Generated from [https://flux\.ai/silicon\-yard/mcp23016\-iso\~xy](https://flux.ai/silicon-yard/mcp23016-iso~xy)*