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XRT5997 Даташит - Exar Corporation

Номер в каталогеОписание (Функция)производитель
XRT5997 Seven-Channel E1 Line Interface Unit Exar
Exar Corporation Exar
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XRT5997 Datasheet PDF : XRT5997 pdf   
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GENERAL DESCRIPTION
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.

FEATURES
The Main features are as follows:
• 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 75Ω and 120Ω 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

APPLICATIONS
• PDH Multiplexers
• SDH Multiplexers
• Digital Cross-Connect Systems
• DECT (Digital European Cordless Telephone) Base Stations
• CSU/DSU Equipment

 

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