GENERAL DESCRIPTION

The XR-T5794 is an optimized line interface unit, built using low power CMOS technology. The device contains four independent E1 channels for primary rate, PCM applications up to 2.048Mbps. Each channel performs the driver and receiver functions necessary to convert bipolar signals to TTL/CMOS compatible logic levels and vice versa. The device supports single ended or balanced line interfaces on each channel, thereby providing the user an option of reducing system cost and board space by replacing the transformer with a capacitor.

FEATURES

● Meets CCITT G.703 Pulse Mask Template for

2.048Mbps (E1) Rates

● Transmitter and Receiver Interfaces Can Be:

– Single Ended, 75? Capacitive or Transformer

Coupled

– Balanced, 100 or 120? Transformer Coupled

● Minimum Return Loss is 20dB (Receive) and 18dB

(Transmit), Exceeds G.703 and ETSI 300 166

Specifications

● Bipolar Outputs can be Disabled Individually (High Z

Outputs)

● System Interface is TTL Compatible on Digital Input

and TTL/CMOS Compatible On Digital Output Pins

● Individual Channel Loss of Signal Detection, Local

and Remote Digital Loopback

● Fifth Driver For Monitoring and Testing

● Low Power, CMOS Technology

● Over-temperature Protection

APPLICATIONS

● Multi-Line E1 Interface Cards

● E1 Network Equipment

– Multiplexers

– Cross Connects

– Switching Systems

● Fault Tolerant Systems