The XRT91L80IBCWE is an Octal T1/E1/J1 Long Haul Transceiver manufactured by Exar Corporation. This device is designed for high-density telecommunications applications that require multiple T1, E1, or J1 interfaces. By integrating eight transceivers into a single chip, it offers significant space and cost savings compared to using discrete components.

Applications:

• High-Density T1/E1/J1 Line Cards
• Digital Cross-Connect Systems (DCS)
• Central Office Switches
• Voice over IP (VoIP) Gateways
• Channel Service Units/Data Service Units (CSU/DSU)
• Wireless Base Stations
• Multi-Service Access Nodes (MSANs)

Features:

• Octal (8-Channel) T1/E1/J1 Transceiver
• Long Haul Line Interface
• Integrated Pulse Shaping and Line Build-Out
• Jitter Attenuation
• Clock Recovery
• Individual Channel Loopback Testing
• Comprehensive Diagnostic Features
• Low Power Consumption

Benefits:

• High Density: The octal design allows for a significant reduction in board space, enabling higher density line cards.
• Cost-Effective: Integrating eight transceivers into a single chip reduces the overall component count and cost.
• Improved Signal Integrity: The long-haul line interface ensures reliable data transmission over extended distances.
• Simplified Design: The integrated functions simplify the design process, reducing development time and effort.
• Enhanced System Performance: Jitter attenuation and clock recovery contribute to improved signal quality and data reliability.
• Easy Integration: Comprehensive diagnostic features and loopback testing capabilities facilitate easy system integration and troubleshooting.
• Reduced Power Consumption: The low power design helps to minimize power consumption in high-density applications.

Additional Details:

The XRT91L80IBCWE supports T1 (1.544 Mbps), E1 (2.048 Mbps), and J1 data rates. It features integrated pulse shaping and line build-out, essential for optimizing signal transmission over various cable types and lengths. The device includes jitter attenuation circuitry to minimize jitter accumulation. The clock recovery function ensures precise data sampling. Each channel has independent loopback testing capabilities for streamlined diagnostics. It typically operates from a 3.3V power supply and includes comprehensive diagnostic features for monitoring system performance. The package is designed for efficient thermal management.