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MCP23S09 - 8-Bit I/O Expander

Download the MCP23S09 datasheet PDF. This datasheet also covers the MCP23009 variant, as both devices belong to the same 8-bit i/o expander family and are provided as variant models within a single manufacturer datasheet.

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 o.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MCP23009_MicrochipTechnology.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Microchip Technology

Part Number Description
MCP23S08 8-Bit I/O Expander
MCP23S17 16-Bit I/O Expander
MCP23S18 16-Bit I/O Expander
MCP23008 8-Bit I/O Expander
MCP23009 8-Bit I/O Expander

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
MCP23009/MCP23S09 8-Bit I/O Expander with Open-Drain Outputs 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.