XR17V258IVTR-F

Overview

The XR17V258IVTR-F is an octal UART interface integrated circuit manufactured by MaxLinear. It provides eight independent serial communication channels within a single package, designed for high-density I/O applications. The device supports data rates up to 8 Mbps and includes a 64-byte FIFO per channel to manage data throughput efficiently. It operates on dual voltage supplies of 3.3V and 5V, ensuring compatibility with various logic levels. The component is housed in a 144-LQFP surface-mount package measuring 20x20 mm. Key electrical specifications include support for RS485 protocols and automatic flow control mechanisms.

Feature Summary

• Octal architecture providing eight independent UART channels for expanded serial connectivity
• Integrated 64-byte transmit and receive FIFOs per channel to reduce CPU overhead
• Support for RS485 differential signaling standards for robust noise immunity
• Automatic hardware flow control capabilities to prevent data loss during transmission

Applications

• Industrial automation systems requiring multiple serial device connections
• Telecommunications infrastructure utilizing RS485 bus networks
• Embedded computing platforms needing high-channel-count serial expansion
• Test and measurement equipment interfaces

Procurement Notes

Verify the specific suffix IVTR against official MaxLinear documentation to confirm tape-and-reel packaging and temperature grade. Confirm RoHS compliance status through current datasheets as manufacturing processes may evolve. Check for any product discontinuation notices or lifecycle changes prior to finalizing procurement plans to ensure long-term supply stability.

Selection Notes

Select this component when eight simultaneous serial ports are required in a compact form factor. Ensure the design accommodates the 144-LQFP footprint and thermal requirements. Verify that the system power rails support both 3.3V and 5V operations if interfacing with mixed-voltage peripherals. Consider the 8 Mbps maximum speed limit when designing for high-throughput serial links.

Part Context

This part belongs to the XR17V258 series of PCI bus UARTs from MaxLinear. It serves as a bridge between parallel PCI buses and serial asynchronous interfaces. The series is designed for applications requiring significant serial port density without consuming excessive board space or PCI slots.

Replacement Considerations

Public sources indicate the XR17V258IV is discontinued. Potential replacements include other MaxLinear PCIe UARTs like the XR17V358IB176-F, though pinouts and FIFO depths differ significantly. Evaluate functional equivalence carefully rather than assuming direct pin-to-pin compatibility.