Our general purpose IO Expander (GPIO) products are available with I2C bus interface and 2 to 48 IOs. Some of the products feature an additional INT (INTerrupt) output and/or a REST or OE (Output Enable) input signals.

The output is used to signal the microcontroller when any of the inputs state has been changed (from 1 to 0 or 0 to 1). The RESET input can be used to initialize the device to its default state without powering it down.