XR17D158IV

Overview

The XR17D158IV is an octal Universal PCI Bus UART interface integrated circuit manufactured by MaxLinear. It provides eight independent UART channels within a single package, designed for high-density serial communication applications. The device features a 64-byte FIFO buffer per channel to enhance data throughput and reduce CPU overhead. It supports data rates up to 6.25 Mb/s and operates with a supply voltage range of 4.5 V to 5.5 V. The component is housed in a 144-pin LQFP surface-mount package and is rated for industrial temperatures from -40°C to +85°C.

Feature Summary

• Integrates eight independent UART channels with dedicated 64-byte FIFO buffers for each port.
• Supports high-speed serial communication with maximum data rates reaching 6.25 Mb/s.
• Compatible with Universal PCI Bus signaling designs for system integration.

Applications

• Industrial automation systems requiring multiple serial connections.
• Telecommunications equipment utilizing PCI bus architectures.
• Embedded control systems needing high-density UART expansion.

Procurement Notes

Verify the specific suffix (e.g., IV vs. IV-F) against the manufacturer's current datasheet to confirm temperature grade and packaging details. Confirm RoHS compliance status as manufacturing practices may evolve. Check for obsolescence notices or end-of-life announcements prior to finalizing procurement plans.

Selection Notes

Select this component when eight UART interfaces are required on a PCI-based platform. Ensure the design accommodates the 144-LQFP footprint and thermal requirements. Verify that the host system supports the necessary voltage levels and interrupt configurations for multi-channel operation.

Part Context

This part belongs to the XR17D158 series of PCI UART controllers. It serves as a specialized interface solution for expanding serial connectivity in legacy and industrial PCI systems. The device complements other MaxLinear interface products by providing dense UART functionality without occupying multiple slots.

Replacement Considerations

The XR17V358IB176-F is identified as a manufacturer-recommended replacement. Note that the substitute utilizes a different package type and may require schematic and layout modifications during migration.