NCA9555 Description
NCA9555 16-bit I2C-bus I/O port with interrupt Datasheet (EN) 1.4 Product Overview The NCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus applications. It provides a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. The NCA9555 consists of two 8-bit Configuration (Input or Output...
NCA9555 Key Features
- Operating power supply voltage range of 2.3 V to 5.5 V
- 5 V tolerant I/Os
- I2C to Parallel Port Expander
- Polarity Inversion register
- Active LOW interrupt output
- patible With Most Microcontrollers
- Address by Three Hardware Address Pins for Use of up to Eight Devices
- Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
- Low standby current
- Noise filter on SCL/SDA inputs