XRT75L04IV

Overview

The XRT75L04IV is a four-channel Line Interface Unit (LIU) designed for DS3, E3, and STS-1 telecommunications applications. It integrates jitter attenuation capabilities to maintain signal integrity across network interfaces. The device operates on a single 5 V power supply and supports surface-mount installation in a 176-pin LQFP package. It functions within an industrial temperature range of -40°C to +85°C. This component serves as a critical interface between digital cross-connect systems and transmission lines.

Feature Summary

• Integrates four independent line interface channels for simultaneous DS3, E3, or STS-1 operation
• Includes built-in jitter attenuator functionality to clean incoming clock signals
• Supports standard telecom voltage levels with single-supply operation

Applications

• DS3/E3/STS-1 line interface units in carrier networks
• Digital cross-connect systems requiring high-density channel integration
• Telecommunications multiplexers and add-drop multiplexers

Procurement Notes

Verify the specific suffix 'IV' against the manufacturer's current datasheet to confirm pinout and electrical specifications. Confirm end-of-life status with authorized distributors, as availability may be restricted. Ensure compatibility with existing board layouts regarding the 176-LQFP footprint before procurement.

Selection Notes

Select this component when designing systems requiring four-channel LIU integration with jitter cleaning. Compare against the XRT75L06 for six-channel requirements or the XRT73L03B series for three-channel configurations. Verify that the 5 V supply requirement aligns with the system power architecture.

Part Context

This part belongs to the XRT75L04 family of telecom interface ICs from MaxLinear. It is functionally related to the XRT75L04IVTR variant, which differs primarily in packaging format. The series provides standardized solutions for SONET/SDH and T-carrier network infrastructure.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consider evaluating the XRT75L04IVTR for tape-and-reel packaging needs or the XRT75L06 if additional channel capacity is required.