Product Overview
The MCP23S08-E/SO is a 8-bit general purpose, parallel I/O Expansion for SPI applications. The MCP23S08 consists of multiple 8-bit configuration registers for input, output and polarity selection. The system master can enable the I/Os as either inputs or outputs by writing the I/O configuration bits. The data for each input or output is kept in the corresponding input or output register. The polarity of the input port register can be inverted with the polarity inversion register. All registers can be read by the system master.

1 Address inputs for up to 4 devices on one bus
25mA Sink/source capability per I/O
Supports up to 10MHz SPI™ clock speed
Internal power-on-reset (POR)
Polarity inversion register to configure polarity of input port data
External reset input
1µA (maximum) Low standby current

Applications
Industrial

Product Information
Chip Configuration: 8bit
Bus Frequency: 10MHz
IC Interface Type: Serial, SPI
Supply Voltage Min: 1.8V
Supply Voltage Max: 5.5V
Interface Case Style: SOIC
No. of Pins: 18Pins
No. of I/O's: 16I/O's
Product Range: -
MSL: MSL 1 - Unlimited

What's in the box
1 x Microchip (1332092) I/O Expander