XRT75R12IB-L

Overview

The XRT75R12IB-L is a twelve-channel Line Interface Unit (LIU) manufactured by MaxLinear, designed for telecommunications applications. It supports E3, DS3, and STS-1 line interface standards with integrated SONET capabilities. The device operates on a single power supply ranging from 3.3 V to 5 V and functions within an industrial temperature range of -40°C to +85°C. It utilizes a 420-ball TBGA package measuring 35x35 mm. This component serves as a synchronization-enabled transceiver solution for high-density telecom infrastructure.

Feature Summary

• Integrates twelve independent channels for E3/DS3/STS-1 LIU functionality
• Supports SONET protocol requirements for synchronized transmission
• Operates across a wide industrial temperature range (-40°C to +85°C)
• Compatible with standard 3.3 V to 5 V power supply rails

Applications

• Telecommunications network infrastructure equipment
• SONET/SDH synchronization systems
• E3/DS3/STS-1 line interface units
• Industrial communication gateways

Procurement Notes

Verify the current lifecycle status before procurement planning, as this part may be subject to discontinuation notices. Confirm that the specific suffix 'L' aligns with the required synchronization features and packaging specifications. Ensure compatibility with existing PCB footprints for the 420-ball TBGA package. Check for any product change notifications regarding material composition or manufacturing site changes.

Selection Notes

Select this component when a high-density solution for twelve-channel E3/DS3/STS-1 interfaces is required. The integrated synchronization capability makes it suitable for SONET-based networks. Consider the 420-ball TBGA package constraints during mechanical design. Verify that the operating voltage range of 3.3 V to 5 V matches the system power architecture.

Part Context

This part belongs to the XRT75R series of telecom interface ICs from MaxLinear. It is functionally related to other variants such as the XRT75R12DIB-F and XRT75R12IB-F, which share similar channel counts but may differ in synchronization features or packaging. The series is designed for robust performance in demanding telecommunications environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineering teams should consult official MaxLinear obsolescence notices or authorized distributor recommendations for validated alternatives.