PCF8574A Overview
This 8-bit input/output (I/O) expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 6-V VCC operation. The PCF8574A device provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)].
PCF8574A Key Features
- Low Standby-Current Consumption of 10 μA Max
- I2C to Parallel-Port Expander
- Open-Drain Interrupt Output
- patible With Most Microcontrollers
- Latched Outputs With High-Current Drive
