BUY MCP23017-E/SS https://www.utsource.net/itm/p/1908831.html
16-Bit I/O Expander with Serial Interface
The MCP23017-E/SS is a 16-bit I/O expander with an I2C interface. It is designed to provide a simple and cost-effective solution for adding more I/O pins to a microcontroller. The device features two 8-bit I/O ports, each with interrupt-on-change capability. It also includes an interrupt output pin and a configurable interrupt polarity. Features: 16-bit I/O expander with I2C interface Two 8-bit I/O ports Interrupt-on-change capability Interrupt output pin Configurable interrupt polarity Applications: Automotive Industrial Consumer Medical Robotics (For reference only)