Microchip Technology, Inc. Interface - I/O Expanders MCP23S08-E/SO

The MCP23S08-E/SO is an 8-bit I/O expander with a high-speed SPI interface, capable of operating at speeds up to 10 MHz. It features eight bidirectional I/O pins that default to input mode, allowing for flexible configuration in various applications. The device supports up to four devices on the same bus through the use of hardware address pins and a single chip select line. It includes a configurable interrupt output pin, which can be set as active-high, active-low, or open-drain, and supports interrupt-on-change functionality. The MCP23S08-E/SO operates within a voltage range of 1.8V to 5.5V and is rated for a wide temperature range of -40¬8C to +125¬8C. It has a low standby current of 1 ¬µA (maximum), making it suitable for power-sensitive applications. The device is available in multiple package types, including an 18-pin SOIC package, which is ideal for space-constrained designs. This I/O expander is a practical choice for engineers looking to increase the number of I/O ports in their projects while maintaining efficient communication and low power consumption.