MCP23S09 Datasheet (PDF) Download
Microchip Technology
MCP23S09

Key Features

  • 8-Bit Remote Bidirectional I/O Port: - I/O Pins Default to Input
  • Open-Drain Outputs: - 5.5V Tolerant - 25 mA Sink Capable (per Pin) - 200 mA Total
  • High-Speed I2C™ Interface (MCP23009): - 100 kHz - 400 kHz - 3.4 MHz
  • High-Speed SPI Interface (MCP23S09): - 10 MHz
  • Single Hardware Address Pin (MCP23009): - Voltage input to allow up to eight devices on the bus
  • Configurable Interrupt Output Pins: - Configurable as active-high, active-low or open-drain CS SCK
  • Configurable Interrupt Source: - Interrupt-on-Change from configured defaults or pin change
  • Polarity inversion register to configure the polarity of the input port data
  • External Reset Input
  • Low Standby Current