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MCP23S18 - 16-Bit I/O Expander

Download the MCP23S18 datasheet PDF. This datasheet also covers the MCP23018 variant, as both devices belong to the same 16-bit i/o expander family and are provided as variant models within a single manufacturer datasheet.

General Description

I2C PINOUT DESCRIPTION (MCP23018) 24L QFN 24 1 2 3 4 5 6 7 8 23 9 10 11 12 13 14 15 16 17 18 19 20 21 22 25 24L Pin SSOP Type 2 3 4 5 6 7 8 9 10 1 11 12 13 14 15 16 17 18 19 20 21 22 23 24 I/O I/O I/O I/O I/O I/O I/O I/O P P I I/O I I O O I/O I/O I/O I/O I/O I/O I/O I/

Key Features

  • 16-bit remote bidirectional I/O port: - I/O pins default to input.
  • Open-drain outputs: - 5.5V tolerant - 25 mA sink capable (per pin) - 400 mA total.
  • High-speed I2C™ interface: (MCP23018) - 100 kHz - 400 kHz - 3.4 MHz.
  • High-speed SPI interface: (MCP23S18) - 10 MHz: 2.7V ≤ VDD ≤ 5.5V.
  • Single hardware address pin: (MCP23018) - Voltage input to allow up to eight devices on the bus.
  • Configurable interrupt output pins: - Configurable as active-hi.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MCP23018_MicrochipTechnology.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Microchip Technology

Part Number Description
MCP23S17 16-Bit I/O Expander
MCP23S08 8-Bit I/O Expander
MCP23S09 8-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
MCP23018/MCP23S18 16-Bit I/O Expander with Open-Drain Outputs Features • 16-bit remote bidirectional I/O port: - I/O pins default to input • Open-drain outputs: - 5.5V tolerant - 25 mA sink capable (per pin) - 400 mA total • High-speed I2C™ interface: (MCP23018) - 100 kHz - 400 kHz - 3.4 MHz • High-speed SPI interface: (MCP23S18) - 10 MHz: 2.7V ≤ VDD ≤ 5.