TCA6416RTWT

Overview

The TCA6416RTWT is a 16-bit I/O expander designed for I2C and SMBus interfaces, manufactured by Texas Instruments. It operates within a voltage range of 1.65 V to 3.6 V and supports a maximum clock frequency of 1 MHz. The device features configurable open-drain interrupt outputs and programmable pull-up resistors on all ports. It is housed in a 20-pin HTSSOP package with a 0.65 mm pitch. The component includes ESD protection rated at ±8 kV (HBM) and ±500 V (MM). It functions across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Supports bidirectional data translation between different voltage domains
• Configurable open-drain interrupt output for efficient event notification
• Programmable internal pull-up resistors on all I/O ports

Applications

• Portable consumer electronics requiring low power consumption
• Industrial control systems utilizing I2C/SMBus communication
• Embedded systems needing additional GPIO expansion

Procurement Notes

Verify the exact suffix RTWT against official Texas Instruments documentation to confirm package type and tape/reel specifications. Ensure compatibility with your system's I2C bus voltage levels and timing requirements before integration. Check for RoHS compliance status in the latest datasheet revision.

Selection Notes

Select this component when a 16-bit I/O expansion solution is required with low-voltage operation. Consider the HTSSOP package constraints for PCB layout. Verify that the 1 MHz I2C speed meets your system's communication needs. Compare with similar devices like the TCA6408 if fewer pins are sufficient.

Part Context

The TCA6416 series belongs to Texas Instruments' family of low-power I/O expanders. These devices are designed to provide flexible I/O expansion for microcontrollers and processors via standard I2C interfaces. The RTWT variant specifically denotes the 20-pin HTSSOP package configuration suitable for space-constrained applications.

Replacement Considerations

Direct pin-to-pin replacements may include other TCA6416 variants with different suffixes indicating package or temperature variations. Verify electrical characteristics and pinout compatibility before substitution. Consult Texas Instruments documentation for approved alternatives.