Microchip MCP23017 I2C Port Expander 5 volts

The MCP23017 device family provides 16-bit, general purpose parallel I/O expansion for I2C bus applications.

The 16-bit I/O port functionally consists of two 8-bit ports (PORTA and PORTB).

Features

• 16-bit input/output port expander with interrupt output
• Cascadable for up to 8 devices on one bus
• 25mA sink/source capability per I/O
• Three hardware address pins to allow up to eight devices on the bus
• High-speed I2C™ interface (MCP23017)

Documentation

MCP23017/MCP23S17 Data Sheet