PCA9534 Datasheet PDF - NXP

General description

●The PCA9534 is a 16-pin CMOS device that provide 8 bits of General Purpose parallel Input/Output (GPIO) 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, 400 kHz clock frequency, 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.

●Features

●8-bit I2C-bus GPIO

●Operating power supply voltage range of 2.3 V to 5.5 V

●5 V tolerant I/Os

●Polarity Inversion register

●Active LOW interrupt output

●Low standby current

●Noise filter on SCL/SDA inputs

●No glitch on power-up

●nternal power-on reset