I/O Expander

I/O Expander ICs are designed to expand the input and output capabilities of microcontrollers by providing additional GPIO ports through simple serial interfaces such as I2C and SMBus. These GPIO Expander ICs offer flexible port configuration, interrupt support, and efficient communication, helping reduce MCU pin limitations while simplifying system design. Featuring low power consumption, compact integration, and multi-voltage compatibility, I2C I/O Expanders provide reliable solutions for controlling switches, LEDs, sensors, displays, and other peripheral devices. Widely used in consumer electronics, industrial equipment, smart home devices, and embedded systems, I/O Expander ICs improve system flexibility and reduce hardware complexity. With integrated level shifting capability and configurable input/output functions, ETEK GPIO Expansion ICs enable efficient peripheral control for modern multi-function electronic applications.