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.