NCA9555PW 16-Bit I2C & SMBus I/O Expanders
Nexperia NCA9555PW 16-Bit I2C and SMBus I/O Expanders are an efficient solution to expand the General Purpose Input/Output (GPIO) capabilities of I2C-bus/SMBus applications. The Nexperia NCA9555PW devices have a 1.65V to 5.5V wide operating voltage range. The NCA9555 is designed to meet the needs of various devices, including interrupt and pull-up resistors. These devices include ACPI power switches, sensors, push buttons, LEDs, and fan control systems. The NCA9555 features 8-bit input, output, configuration, and polarity inversion registers, with all IOs defaulting to inputs upon power-up. The device's flexible configuration options allow each IO to be set as an input or output, making it an ideal choice for adding additional IOs with minimal interconnections.
