Microchip 16-Bit I2C I/O Expander SOIC-28

The Microchip 16-Bit I/O Expander with Serial Interface provides a robust solution for expanding your microcontroller's I/O capabilities over an I2C interface. This 16-bit remote bidirectional I/O port operates with a flexible supply voltage range from 1.8V to 5.5V, making it suitable for a wide array of low-power and standard logic applications.

Key Features:

• High-Speed I2C Interface: Operates at up to 1.7MHz, enabling fast communication with your host controller.
• Flexible Addressing: Three hardware address pins allow up to 8 devices to coexist on the same I2C bus.
• Configurable Interrupt Outputs: Two interrupt pins (INTA, INTB) can be configured independently or together, with active-high, active-low, or open-drain options.
• Smart Interrupt Handling: Interrupts can be triggered on changes from configured register defaults or individual pin changes, plus a polarity inversion register for input port logic.
• Low Power Consumption: With a standby current of just 1µA, it is ideal for battery-powered equipment.
• External Reset Input: Provides a reliable hardware reset capability for critical systems.
• Wide Temperature Range: Specified for operation from -40°C to +125°C, ensuring reliability in demanding environments.

Package & Specifications:

• Package: SOIC-28 (28 pins)
• Number of I/Os: 16
• Supply Voltage: 1.8V to 5.5V
• Operating Temperature: -40°C to +125°C

The device simplifies system design by allowing I/O expansion without complex wiring, making it perfect for applications where multiple sensors, LEDs, or switches must be monitored or controlled.