XR82C684JTR-F

Overview

The XR82C684JTR-F is a quad-channel UART interface integrated circuit manufactured by MaxLinear. It provides four fully independent full-duplex asynchronous communication channels within a single package. The device supports data rates up to 1 Mb/s and includes internal FIFO buffers for each channel to enhance throughput efficiency. It operates with supply voltages of 3.3 V, 5 V, or 12 V, ensuring compatibility with various logic families. The component is housed in a 68-pin PLCC (Plastic Leaded Chip Carrier) surface-mount package, designed for industrial applications requiring robust serial connectivity.

Feature Summary

• Integrates four independent UART channels for simultaneous multi-port communication
• Includes transmit and receive FIFO buffers to manage data flow efficiently
• Supports multiple voltage levels including 3.3 V, 5 V, and 12 V operation
• Features hardware flow control signals for reliable data transmission

Applications

• Industrial automation systems requiring multiple serial ports
• Telecommunications equipment with high-density I/O needs
• Embedded controllers managing diverse peripheral connections
• Test and measurement instruments needing asynchronous interfaces

Procurement Notes

Verify the exact suffix configuration against official MaxLinear documentation, as variations may indicate different temperature ranges or packaging options. Confirm RoHS compliance status through current datasheets. Check for End-of-Life notices or Product Change Notifications that may affect long-term availability. Ensure the supplier provides traceable components from authorized distribution channels to guarantee authenticity and performance reliability.

Selection Notes

Select this component when a design requires four distinct UART interfaces without consuming excessive board space. Compare pinout compatibility with existing PCB layouts before finalizing the choice. Consider the PLCC package constraints regarding thermal dissipation and soldering profiles. Evaluate if the internal FIFO depth meets the specific latency requirements of the target application compared to simpler UART solutions.

Part Context

This part belongs to the XR82C684 series of quad UARTs produced by MaxLinear, formerly Exar Corporation. The series is known for providing high-performance asynchronous communication capabilities in compact packages. The JTR suffix typically denotes a specific tape-and-reel packaging format intended for automated assembly processes, distinguishing it from tube-packaged variants like the CJ version.

Replacement Considerations

Direct replacements include the XR82C684CJ-F for identical functionality in a PLCC-68 tube package. For leaded DIP versions, the XR82C684J serves as a compatible alternative. Verify pin-to-pin compatibility and electrical specifications before substituting any other quad UART devices from different manufacturers.