Features 16-bit remote bidirectional I/O port- I/O pins default to input High-speed I2C interface (MCP23017)- 100 kHz- 400 kHz-1.7MHz High-speed SPI interface (MCP23S17)- 10 MHz (max.) Three hardware address pins to allow up to eight devices on the bus Configurable interrupt output pins- Configurable as active-high, active-low or open-drain INTA and INTB can be configured to operate independently or together Configurable interrupt source- Interrupt-on-change from configured register defaults or pin changes Polarity Inversion register to configure the polarity 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 Packages 28-pin PDIP (300 mil) 28-pin SOIC (300 mil) 28-pin SSOP 28-pin QFN

Configurable interrupt output pins- Configurable as active-high, active-low or open-drain. Three hardware address pins to allow up to eight devices on the bus. High-speed I2C interface (MCP23017)- 100 kHz- 400 kHz-1.7MHz. 16-bit remote bidirectional I/O port- I/O pins default to input.