XR-T5793 Datasheet PDF - Exar Corporation

GENERAL DESCRIPTION
The XR-T5793 is an optimized line interface unit, built using low power CMOS technology. This 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, 75Ω Capacitive or Transformer
      Coupled
   – Balanced, 100Ω or 120Ω 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
● Low Power, CMOS Technology
● Over-Temperature Protection

APPLICATIONS
● Multi-Line E1 Interface Cards
● E1 Network Equipment
   – Multiplexers
   – Cross Connects
   – Switching Systems
● Fault Tolerant Systems