Description
The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders.
Features
- 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.
- Internal power-on reset.
- 8 I/O pins which default to 8 inputs.
- 0 Hz to 400 kHz clock frequency
NXP Semiconductors
PCA9554; PCA9554A
8-bit I2C-bus and SMBus I/O port with interrupt.
- ESD protection exceeds 2000 V HBM per JESD22-A114 a.
PCA9554 Datasheet
