16-Bit Remote Bidirectional I/O Port:

- I/O pins default to input• High-Speed I2C Interface (MCP23017):- 100kHz- 400kHz- 1.7MHz• High-Speed SPI Interface (MCP23S17):- 10 MHz (maximum)• Three Hardware Address Pins to Allow Up toEight Devices On the Bus• Configurable Interrupt Output Pins:- Configurable as active-high, active-low oropen-drain• INTA and INTB Can Be Configured to OperateIndependently or Together• Configurable Interrupt Source:- Interrupt-on-change from configured registerdefaults or pin changes• Polarity Inversion Register to Configure thePolarity of the Input Port Data• External Reset Input• Low Standby Current: 1 μA (max.)• Operating Voltage:- 1.8V to 5.5V @ -40°C to +85°C- 2.7V to 5.5V @ -40°C to +85°C- 4.5V to 5.5V @ -40°C to +125°C