Description
The PCA9539; PCA9539R is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders.
Features
- 16-bit I2C-bus GPIO with interrupt and reset.
- Operating power supply voltage range of 2.3 V to 5.5 V (3.0 V to 5.5 V
for PCA9539PW/Q900 and PCA9539RPW/Q900).
- 5 V tolerant I/Os
NXP Semiconductors
PCA9539; PCA9539R
16-bit I2C-bus and SMBus low power I/O port with interrupt and reset.
- Polarity inversion register.
- Active LOW interrupt output.
- Active LOW reset input.
- Low standby current.
- Noise filter on SCL/SDA inputs.
- No glitch on power-up.
- Inter.
PCA9539_PhilipsSemiconductors.pdf