Parts, tools and supplies for the electronics experimenter.
16-bit bidirectional I/O port with a high-speed I2C interface. Add 16 pins to a project configurable as inputs, outputs or inputs with pullup. Excellent for adding more I/O to a microcontroller or SBC. Operates over 2.7V to 5V. I2C is configurable enabling you to daisy chain up to 8 expanders on the same I2C bus.