The XRT94L31IB is a 4-channel T1/E1/J1 line interface unit (LIU) manufactured by Exar Corporation. This device is designed to provide a robust and reliable interface between network equipment and T1, E1, or J1 lines. It integrates all the necessary functions for transmitting and receiving data over these lines, including clock recovery, jitter attenuation, and line equalization.

Applications

• Digital Cross-Connect Systems (DCS)
• Channel Banks
• PBX Systems
• Wireless Base Stations
• Voice over IP (VoIP) Gateways
• Routers and Switches

Features

• Four independent T1/E1/J1 transceivers
• Integrated clock recovery and jitter attenuation
• Programmable transmit pulse shaping
• Receive equalization for various cable lengths
• Loopback testing capabilities
• Supports both short haul and long haul applications
• Low power consumption
• Small form factor package

Benefits

• Reduced system cost due to integration of multiple functions
• Improved network performance through robust clock recovery and jitter attenuation
• Flexible configuration options for various network environments
• Simplified system design and integration
• Enhanced network reliability through comprehensive diagnostic capabilities

Additional Details

The XRT94L31IB operates from a single 3.3V power supply. It supports various line coding formats, including AMI, B8ZS, and HDB3. The device is available in a lead-free package. It provides comprehensive loopback testing capabilities, allowing for easy troubleshooting and maintenance. The integrated clock recovery and jitter attenuation circuitry ensures that the recovered clock is clean and stable, even in noisy environments. The programmable transmit pulse shaping allows the device to be optimized for different cable types and lengths, maximizing signal integrity. The receive equalization feature compensates for signal loss and distortion caused by long cable runs, ensuring reliable data transmission.