I2C I/O Expander 28-Pin SPDIP

The MCP23016 device provides 16-bit, general purpose, parallel I/O expansion for I2C bus applications. This device includes high-current drive capability, low supply current and individual I/O configuration. I/O expanders provide a simple solution when additional I/Os are needed for ACPI, power switches, sensors, push buttons, LEDs and so on. The MCP23016 consists of multiple 8-bit configuration registers for input, output and polarity selection. The system master can enable the I/Os as either inputs or outputs by writing the I/O configuration bits. The data for each input or output is kept in the corresponding input or output register.

• 16-bit remote bidirectional I/O port - 16 I/O pins default to 16 inputs
• Fast I2C™ bus clock frequency (0 - 400 kbits/s)
• Three hardware address pins allow use of up to eight devices
• High-current drive capability per I/O: ±25 mA
• Open-drain interrupt output on input change
• Interrupt port capture register
• Internal Power-On Reset (POR)
• Polarity inversion register to configure the polarity of the input port data
• Compatible with most microcontrollers
• Available temperature range: - Industrial (I): -40°C to +85°C