NOS8003 16-Channel IO Expander

The NOS8003 is a 16-bit I/O expander based on the MCP23017 from Microchip providing 25mA sink/source current per I/O making it the ideal interface to instantly gain additional I/O.

There are two interrupt pins, INTA and INTB, that can be associated with their respective ports, or can be logically OR’ed together so that both pins will activate if either port causes an interrupt.

Features

• 16-Bit Remote Bidirectional I/O Port:
• I/O pins default to input
• High-Speed I2C Interface (MCP23017):
  • 100 kHz
  • 400 kHz
  • 1.7 MHz
• Configurable Interrupt Output Pins:
  • Configurable as active-high, active-low or open-drain
  • INTA and INTB Can Be Configured to Operate Independently or Together
• Configurable Interrupt Source:
  • Interrupt-on-change from configured register defaults or pin changes
  • Polarity Inversion Register to Configure the Polarity of the Input Port Data
• External Reset Input
• Low Standby Current: 1 µA (max.)