XRT75VL00DIVTR-F

Overview

The XRT75VL00DIVTR-F is a single-channel Line Interface Unit (LIU) with an integrated SONET desynchronizer designed for E3, DS3, and STS-1 applications. It incorporates independent receiver, transmitter, and jitter attenuator sections within a 52-pin TQFP package. The device operates on a single 3.3 V ± 5% power supply with 5 V tolerant I/O and supports industrial temperatures from -40°C to +85°C. It features a crystal-less jitter attenuator selectable in transmit or receive paths, B3ZS/HDB3 encoding/decoding, and PRBS generation/detection capabilities.

Feature Summary

• Integrated crystal-less jitter attenuator compliant with ETSI TBR-24 and Bellcore GR-499 specifications.
• Supports configurable E3, DS3, and STS-1 operational modes with tri-state transmitter output.
• Includes advanced clock and data recovery circuitry meeting ITU-T G.775 loss of signal requirements.
• Provides comprehensive diagnostic features including local, remote, and digital loop-backs.

Applications

• E3/DS3 Access Equipment
• DSLAMs
• Digital Cross Connect Systems
• CSU/DSU Equipment

Procurement Notes

Verify the specific suffix 'IVTR' against official documentation to confirm tape-and-reel packaging and temperature range. Confirm that the component is sourced directly from MaxLinear or authorized distributors to ensure authenticity. Check for recent product change notices regarding pinout or electrical characteristics updates.

Selection Notes

Select this component for designs requiring a fully integrated LIU solution with SONET de-synchronization. Ensure the application requires a single-channel interface supporting E3, DS3, or STS-1 rates. Verify that the system can accommodate a 52-pin TQFP footprint and operates within the specified 3.3V voltage domain.

Part Context

This part belongs to the XRT75L series of telecom interface ICs manufactured by MaxLinear (formerly Exar). It serves as a specialized line interface unit for high-speed digital transmission networks, bridging terminal equipment to the physical line while managing signal integrity through built-in jitter attenuation.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer obsolescence notices for potential end-of-life status or recommended upgrades within the same product family.

FAQ

Can the jitter attenuator be disabled?

Yes, the on-chip advanced crystal-less jitter attenuator can be disabled if required by the specific application design.

What encoding schemes does the device support?

The XRT75VL00DIVTR-F includes an on-chip B3ZS/HDB3 encoder and decoder that can be either enabled or disabled depending on the mode of operation.

How is the device configured and controlled?

Configuration and control are supported via a 5-wire Serial Microprocessor Interface (Host Mode) or through direct Hardware Mode settings.