XR22804IL56TR-F

Overview

The XR22804IL56TR-F is a quad Universal Asynchronous Receiver/Transmitter (UART) interface integrated circuit manufactured by MaxLinear. It features four independent channels, each equipped with a 128-byte transmit and receive FIFO buffer to enhance data throughput and reduce CPU overhead. The device supports baud rates up to 3 Mb/s and operates within a voltage range of 2.97 V to 3.63 V. It is housed in a 56-lead QFN package with an exposed pad, designed for surface-mount installation. The component functions as a bridge between parallel processor buses and serial asynchronous communication lines.

Feature Summary

• Integrates four independent UART channels with substantial 128-byte FIFO buffers per channel to minimize processor intervention during high-volume data transfers.
• Supports standard asynchronous serial protocols including RS-232, RS-422, and RS-485 signaling levels through external transceivers.
• Features comprehensive hardware flow control mechanisms, including automatic RTS/CTS management and modem status signal monitoring.

Applications

• Industrial automation systems requiring multiple serial connections for sensor networks or PLC communication.
• Telecommunications infrastructure equipment utilizing multi-port serial interfaces for network management.
• Embedded computing platforms needing expanded serial I/O capabilities via USB or PCIe bridges.

Procurement Notes

Verify the specific suffix TR-F indicates tape-and-reel packaging when sourcing components. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check for recent Product Change Notices (PCN) or End-of-Life (EOL) notifications from MaxLinear to ensure long-term supply stability for production runs.

Selection Notes

Select this component when a design requires four distinct serial ports with deep buffering to handle bursty data traffic without overruns. Ensure the host system provides adequate GPIO pins for hardware flow control if required. Compare against single-channel alternatives if fewer ports are sufficient to optimize board space and cost.

Part Context

This part belongs to the XR2280x series of high-performance UART controllers. It shares architectural similarities with the XR22801 and XR22802 but scales channel count to four. It complements MaxLinear's broader portfolio of interface solutions, often paired with their USB-to-UART bridge chips like the XR22801 in complex connectivity designs.

Replacement Considerations

Direct pin-compatible replacements may be limited due to the specific 56-lead QFN footprint and internal logic mapping. Evaluate the XR22802 for dual-channel needs or the XR22801 for single-channel USB bridging applications. Verify electrical compatibility and firmware support before substituting with other manufacturers' quad UARTs.