The XRT91L81IBCSD is an Octal T1/E1/J1 Long Haul Transceiver produced by Exar Corporation. This device integrates eight independent transceivers, designed to handle T1, E1, or J1 signals over long distances. It is tailored for applications requiring a high density of T1/E1/J1 interfaces, delivering significant space and cost savings compared to discrete solutions.

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:

• Reduced Board Space: The integration of eight transceivers significantly reduces the required board space.
• Lower Cost: Using a single chip reduces the bill of materials and overall system cost.
• Improved Signal Quality: The long-haul line interface ensures reliable data transmission over extended distances.
• Simplified Design: Integrated pulse shaping, line build-out, and clock recovery functions simplify the design process.
• Enhanced Reliability: Jitter attenuation and accurate clock recovery enhance signal quality and data reliability.
• Easy Troubleshooting: Individual channel loopback testing enables efficient system diagnostics and troubleshooting.
• Efficient Power Usage: Low power consumption is crucial for high-density applications, leading to lower operating costs.

Additional Details:

The XRT91L81IBCSD supports T1 (1.544 Mbps), E1 (2.048 Mbps), and J1 data rates. It incorporates pulse shaping and line build-out to optimize signal transmission across diverse cable types and distances. Jitter attenuation is implemented to minimize jitter accumulation, ensuring clean signal transmission. The clock recovery function ensures accurate data sampling and reliable performance. Each channel includes independent loopback testing for convenient system diagnostics. It is typically powered by a 3.3V supply. The transceiver provides comprehensive diagnostic features for monitoring and maintaining system performance. The package is optimized for thermal efficiency in high-density environments.