TCA9555 Overview
Key Specifications
Package: VQFN
Pins: 24
Max Voltage (typical range): 5.5 V
Min Voltage (typical range): 1.65 V
Description
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.
Key Features
- 1 Low Standby-Current Consumption of 3.5 μA Maximum
- I2C to Parallel Port Expander
- Open-Drain Active-Low Interrupt Output
- 5-V Tolerant I/O Ports
- Compatible With Most Microcontrollers
- 400-kHz Fast I2C Bus
- Configurable Slave Address with 3 Address Pins
- Polarity Inversion Register
- Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
