TCA6416RTWR

Overview

The TCA6416RTWR is a low-voltage 16-bit I2C and SMBus I/O expander manufactured by Texas Instruments. It provides general-purpose remote I/O expansion via two bidirectional pins for serial clock (SCL) and serial data (SDA). The device features voltage translation capabilities, allowing operation with different power domains. Key functional blocks include interrupt output logic, a reset input, and configuration registers that determine the direction of each port pin. It operates within a specified supply voltage range and supports standard communication protocols.

Feature Summary

• Supports I2C and SMBus communication interfaces for microcontroller connectivity
• Includes voltage translation functionality to bridge different power domains
• Provides configurable interrupt output and dedicated reset input
• Features individual port configuration registers for direction control

Applications

• General-purpose remote I/O expansion in embedded systems
• Voltage domain bridging between low-voltage controllers and higher-voltage peripherals
• Portable devices requiring reduced pin counts on main processors

Procurement Notes

Verify the specific suffix RTWR against the official Texas Instruments datasheet to confirm package type and reel specifications. Ensure compatibility with existing PCB footprint designs before procurement. Check for RoHS compliance status as indicated in the manufacturer's documentation. Confirm availability through authorized distributors rather than third-party sources.

Selection Notes

Select this component when a 16-bit I/O expansion solution with integrated voltage translation is required. Compare against similar models like TCA6416ARTWRG4 to verify package and temperature grade requirements. Ensure the system design accommodates the I2C/SMBus interface constraints and pull-up resistor requirements specified in the electrical characteristics section of the datasheet.

Part Context

This part belongs to the TCA6416A family of low-voltage I/O expanders from Texas Instruments. The family is designed for applications needing extended I/O capabilities over standard serial buses. The RTWR suffix typically denotes a specific tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

The TCA6416ARTWRG4 is a documented equivalent within the same product family. Verify pinout compatibility and electrical parameter alignment before substitution. Ensure the replacement part meets the same environmental and packaging requirements as the original design specification.