PCA9555A
Description
The PCA9555A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and weak pull-up resistors for I2C-bus/SMBus applications.
Key Features
- I2C-bus to parallel port expander
- Operating power supply voltage range of 1.65 V to 5.5 V
- Low standby current consumption: 1.5 A (typical at 5 V VDD) 1.0 A (typical at 3.3 V VDD)
- 5 V tolerant I/Os
- Open-drain active LOW interrupt output (INT)
- 400 kHz Fast-mode I2C-bus
- Internal power-on reset
- Power-up with all channels configured as inputs with weak pull-up resistors
- No glitch on power-up
- Latched outputs with 25 mA drive maximum capability for directly driving LEDs
