TCA9539x-Q1 I2C/SMBus I/O Expanders

Texas Instruments TCA9539x-Q1 I²C/SMBus I/O Expanders are 24-pin devices that provide 16 bits of general-purpose parallel input and output (I/O) expansion for the two-line bidirectional I²C bus or SMBus protocol. The device can operate with a power supply voltage (V_CC) range from 1.65V to 5.5V. The device supports clock frequencies of 100kHz (I²C Standard mode) and 400kHz (I²C Fast mode). I/O expanders such as the device provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and other similar devices.