GENERAL DESCRIPTION
The XR-T56L22 is a very low power monolithic repeater/ receiver IC designed for PCM carrier systems operating between 1.544Mbps and 2.37Mbps. The IC provides all the active circuitry required to implement one side of a PCM repeater. The XR-T56L22 features on-chip adjustable phase shifting, an extracted clock output and an on-board shunt regulator. The very low power consumption of the device makes it ideal for long haul “tandem” repeater applications.

FEATURES
• Contains All The Active Components For A PCM Repeater Or Long Haul Line Receiver
• Low Voltage Operation (5.1V)
• Low Power Consumption (8.75mA Max)
• 2Mbps Operation Capability
• Dual Matched ALBO Ports
• Internal Adjustable Phase Shift Circuitry
• Extracted Clock Output
• Internal Shunt Regulator
• Temperature Independent Current Biasing

APPLICATIONS
• T1 PCM Repeater/Receiver
• T148C PCM Repeater/Receiver
• European 2.048Mbps PCM Repeater/Receiver
• Digital Multiplexers, CSUs, Switching Equipment
• ISDN Compatible Equipment: Fax Machines, Computers etc.