Description
The PCA9574 is a CMOS device that provides 8 bits of General Purpose parallel Input/Output (GPIO) expansion in low voltage processor and handheld battery powered mobile applications and was developed to enhance the NXP family of I2C-bus I/O expanders.
Features
- 400 kHz I2C-bus serial interface
NXP Semiconductors
PCA9574
8-bit I2C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt.
- Compliant with I2C-bus Standard-mode (100 kHz).
- Separate supply rails for core logic and I/O bank provides voltage level shifting.
- 1.1 V to 3.6 V operation with level shifting feature.
- Very low standby current: < 1 μA.
- 8 configurable I/O pins that default to inputs at power-up.
- Output.
PCA9574_NXPSemiconductors.pdf
