PCA9674 Description
The PCA9674/74A provides general-purpose remote I/O expansion via the two-wire bidirectional I2C-bus (serial clock (SCL), serial data (SDA)). The devices consist of eight quasi-bidirectional ports, 1 MHz I2C-bus Fast-mode Plus (Fm+) family interface, with high speed data transfer it can support PWM dimming of LEDs, and higher I2C-bus drive 30 mA for more devices can be on the bus without the need for bus buffers....
PCA9674 Key Features
- I2C-bus to parallel port expander
- 1 MHz I2C-bus interface (Fast-mode Plus I2C-bus)
- SDA with 30 mA sink capability for 4000 pF buses
- 8-bit remote I/O pins that default to inputs at power-up
- Latched outputs with 25 mA sink capability for directly driving LEDs
- Total package sink capability of 200 mA
- Active LOW open-drain interrupt output
- Sixty-four programmable slave addresses using three address pins
- sixty-two)
- Readable device ID (manufacturer, device type, and revision)
PCA9674 Applications
- I2C-bus to parallel port expander