NXP PCA9535CHF,118

PCA9535CHF,118 is a 16bit I²C-bus and SMBus, low power I/O port with interrupt CMOS device. It provides 16 bits of general purpose parallel input/output expansion for I²C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I²C-bus I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, and smaller packaging. I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. It consists of two 8-bit configuration (input or output selection), input, output and Polarity inversion registers. Data for each input or output is kept in corresponding input or output register. The polarity of the read register can be inverted with Polarity inversion register. It is identical to the PCA9555 except for the removal of the internal I/O pull-up resistor which greatly reduces power consumption when the I/Os are held LOW.