TCA1116 Overview
This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 1.65-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)]. Two hardware pins (A0 and A1) are used to program and vary the fixed I2C address and allow up to four devices to share the same I2C bus.
TCA1116 Key Features
- I2C to Parallel Port Expander
- Supports partial power down i.e. SDA and SCL are 5V tolerant (<1uA leakage) even when Vcc=0
- Supports 1.8V I2C operation
- Open-Drain Active-Low Interrupt Output
- Active-Low Reset Input
- I/O Ports are 5V tolerant
- Low Standby-Current Consumption of 3 μA Max
- 400-kHz Fast I2C Bus support
- Polarity Inversion Register
- Configurable with up to four different I2C