MCP23008 - 8-Bit I/O Expander

Microchip Technology

Datasheet Details

MCP23008/MCP23S08 8-Bit I/O Expander with Serial Interface.

8-Bit Remote Bidirectional I/O Port - I/O pins default to input.
High-Speed I2C Interface (MCP23008) - 100 kHz - 400 kHz - 1.7 MHz.
High-Speed SPI Interface (MCP23S08) - 10 MHz.
Hardware Address Pins - Three for the MCP23008 to allow up to eight devices on the bus - Two for the MCP23S08 to allow up to four devices using the same Chip Select.
Configurable Interrupt Output Pin - Configurable as active-high, active-low or open-drain Block Diagram MCP2.