TCA6424A Overview
Description
This 24-bit I/O expander for the two-line bidirectional bus (I2C) is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL) and serial data (SDA)]. The major benefit of this device is its wide VCC range.
Key Features
- 1 Operating Power-Supply Voltage Range of 1.65 V to 5.5 V
- I2C to Parallel Port Expander
- Low Standby Current Consumption of 1 μA
- 5-V Tolerant I/O Ports
- Active-Low Reset Input (RESET)
- Open-Drain Active-Low Interrupt Output (INT)
- 400-kHz Fast I2C Bus
- Input/Output Configuration Register
- Polarity Inversion Register
- Internal Power-On Reset
