TCA7408 Overview
Description
TCA7408 is an 8-bit I/O expander for the two-line bidirectional bus (I2C) and is designed to provide general-purpose remote I/O expansion through the I2C interface. The major benefit of this device is its wide VCC range.
Key Features
- 1 Operating Power-Supply Voltage Range of 1.65 to 3.6 V
- Standby Current Consumption of < 2 µA at 1.8 V
- Active Current Consumption of: – < 2 µA at 1.8-V 100-kHz Clock – < 5 µA at 1.8-V 400-kHz Clock
- 100-kHz, 400-kHz Fast Mode
- Internal Power-on-Reset and Watchdog Timer
- Fail Safe I2C, INT, and RESET lines
- Noise Filter on SCL/SDA and Inputs
- Active-Low Reset (RESET) Input
- Open-Drain Active-Low Interrupt (INT) Output
- Programmable Pull-up/Pull-down Resistors for GPIO Inputs
