NCA9539
Description
The NCA9539 provides 16 bits of General Purpose Input/Output (GPIO) expansion with interrupt and reset for I²C-bus/SMBus applications. It is designed for a wide voltage range of 1.65 V to 5.5 V.
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:
- 2.5 µA (maximum)
- Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
- Vhys = 0.10 × VCC (typical)
- Noise filter on SCL and SDA inputs
- 5 V tolerant I/Os
- 16 I/O pins which power up configured in input state
- Open-drain active LOW interrupt output (INT)
