XRT5997

•Consists of Seven (7) Independent E1 (CEPT)Line Interface Units (Transmitter and Receiver)
•Generates Transmit Output Pulses that are Compliant with the ITU-T G.703 Pulse Template Requirement for 2.048Mbps (E1) Rates
•On-Chip Pulse Shaping for both 75W and 120W line drivers
•Receiver Can Either Be Transformer or Capacitive-Coupled to the Line
•Detects and Clears LOS (Loss of Signal) Per ITU-T G.775
•Compliant with the ITU-T G.823 Jitter Tolerance Requirements
•Compliant with ITU G. 703 EOS Over-voltage protection Requirement
•Logic Inputs Accept Either 3.3V or 5.0V Levels
•Operates over the Industrial Temperature Range
•Ultra Low Power Dissipation
•+3.3V Supply Operation

The XRT5997 is an optimized seven-channel analog E1 line interface unit fabricated using low power 3.3V CMOS technology. Each channel consists of both a Transmitter and a Receiver function. The Transmitter accepts a TTL or CMOS level signal from the Terminal Equipment; and outputs this data to the line via bipolar pulses that are compliant to the ITU-T G.703 pulse template for E1. The Receiver accepts an attenuated bipolar line signal (from the remote terminal equipment) and outputs this data to the (near-end) terminal equipment via CMOS level signals. ORDERING INFORMATION Part No. Package Operating Temperature Range XRT5997IV 100-Lead TQFP (14 x 14 x 1.4 mm) -40 to +85 FEATURES The Main features are as follows: l Consists of Seven (7) Independent E1 (CEPT) Line Interface Units (Transmitter and Receiver) Each Receiver input can be transformer or capacitivecoupled to the line. The Receiver input is transformercoupled to the line, using a 2:1 step-down transformer. Each Transmitter is coupled to the line using a 1:2 stepup transformer. This same configuration is applicable for both balanced (120W ) and unbalanced (75W ) interfaces.