XRT75R03IV

Overview

The XRT75R03IV is a telecom interface integrated circuit manufactured by MaxLinear, Inc. It functions as a Line Interface Unit (LIU) designed for T3, E3, and STS-1 signaling applications. The device integrates three independent channels to support high-speed digital transmission standards. It operates with a supply voltage of 3.3V and includes redundancy features to enhance system reliability. The component is housed in a surface-mount package suitable for industrial temperature ranges, facilitating its use in telecommunications infrastructure requiring robust line interface capabilities.

Feature Summary

• Integrates three independent channels for T3, E3, and STS-1 LIU applications
• Supports 3.3V operation with built-in redundancy for enhanced reliability
• Designed for surface-mount installation in telecommunications equipment

Applications

• Telecommunications network infrastructure
• T3/E3/STS-1 line interface units
• Digital signal transmission systems

Procurement Notes

Verify the specific suffix IV against official MaxLinear documentation to confirm temperature range and package details. Confirm end-of-life status and availability through authorized distributors, as this component may be discontinued or subject to limited supply constraints. Ensure compatibility with existing board designs before procurement.

Selection Notes

Select the XRT75R03IV when designing systems requiring multi-channel T3, E3, or STS-1 line interfacing. Compare channel count and voltage requirements against alternatives like the XRT75R06DES if higher channel density is needed. Verify that the 3.3V supply and industrial temperature rating meet the specific environmental and power constraints of the target application.

Part Context

This component belongs to the MaxLinear XRT series of telecom interface ICs. It shares functional similarities with other LIU devices such as the XRT75R03DES and XRT75R06DES, differing primarily in channel count and specific feature sets like desynchronization or redundancy. These parts are commonly used in legacy and modern telecom hardware for signal conditioning and line driving.

Replacement Considerations

Publicly confirmed substitute part numbers for the XRT75R03IV are not available in the provided source data. Engineers should consult MaxLinear's official obsolescence notices or contact technical support directly for validated replacement recommendations.