The AW9523BTQR with Interface - I/O Expanders TQFN-24 RoHS is an integrated circuit (IC) designed and manufactured by Awinic. This device is an I/O port expander with 24 pins in a TQFN package that is RoHS compliant. It is used to expand the number of digital input or output signals from a single I/O port. The AW9523BTQR provides both I2C and SMBus interfaces, opto-isolated I/O ports, up to 16 GPIOs, and low current consumption. It is suitable for applications requiring low voltage digital I/Os, such as in consumer electronics, industrial controls, wireless devices and sensor networks.