XR17V258IV-F

Overview

The XR17V258IV-F is an octal UART interface controller manufactured by MaxLinear, Inc. It integrates eight independent UART channels within a single integrated circuit, designed for high-density serial communication applications. The device supports data rates up to 8 Mbps and features a 64-byte FIFO buffer per channel to manage data throughput efficiently. It operates on dual power supplies of 3.3V and 5V, ensuring compatibility with various logic levels. The component is housed in a 144-LQFP package measuring 20x20 mm, suitable for surface-mount assembly. Key functional attributes include automatic flow control, IrDA encoder/decoder support, modem control signals, and false start bit detection capabilities.

Feature Summary

• Integrates eight independent UART channels for multi-port serial connectivity
• Supports RS485 protocol signaling for robust industrial communication
• Includes hardware automatic flow control to prevent data loss
• Features built-in IrDA encoder and decoder functionality

Applications

• Industrial automation systems requiring multiple serial connections
• Telecommunications equipment utilizing RS485 networks
• Embedded systems needing high-density UART interfaces
• Point-of-sale terminals with infrared communication support

Procurement Notes

Verify the exact suffix designation when sourcing replacements, as manufacturing changes may affect pinout or electrical characteristics. Confirm RoHS compliance status through official datasheets prior to integration. Check for end-of-life notifications from MaxLinear to ensure long-term supply chain stability for production runs.

Selection Notes

Select this component when eight simultaneous UART ports are required in a compact form factor. Ensure the design accommodates the 144-LQFP thermal requirements and 20x20 mm footprint. Verify that the system voltage rails align with the specified 3.3V and 5V operating ranges for reliable signal integrity across all channels.

Part Context

This part belongs to the XR17V258 series of universal PCI bus UART controllers. It serves as a bridge between parallel PCI bus transactions and asynchronous serial data streams. The device is part of MaxLinear's portfolio of interface solutions designed for legacy and modern embedded architectures requiring extensive serial I/O capabilities.

Replacement Considerations

Direct substitutes may include other octal UART ICs from MaxLinear or competitors offering similar FIFO depths and pin counts. Verify package compatibility and electrical specifications before substitution.