The XRT91L30IQTR is a single-channel T1/E1/J1 long haul transceiver manufactured by Exar Corporation. It's designed for network interface applications requiring robust performance and signal integrity over extended distances. This transceiver integrates all the necessary functions for transmitting and receiving data over T1, E1, and J1 lines, simplifying the design process and reducing the overall component count.

Applications:

• T1/E1/J1 Line Interface Cards
• Digital Cross-Connect Systems (DCS)
• Private Branch Exchange (PBX) Systems
• Voice over IP (VoIP) Gateways
• Channel Service Units/Data Service Units (CSU/DSU)
• Wireless Base Stations
• Network Interface Equipment

Features:

• Single-Channel T1/E1/J1 Transceiver
• Long Haul Line Interface
• Integrated Pulse Shaping and Line Build-Out
• Jitter Attenuation
• Clock Recovery
• Loopback Testing Capability
• Comprehensive Diagnostic Features
• Small Footprint Package

Benefits:

• Reduced Board Space: The integrated design minimizes the number of external components required, saving valuable board space.
• Improved Signal Integrity: The long-haul line interface ensures reliable data transmission over extended distances.
• Simplified Design: The transceiver handles the complex tasks of pulse shaping, line build-out, and clock recovery, simplifying the design process for engineers.
• Enhanced System Performance: Jitter attenuation and clock recovery contribute to improved system performance and data reliability.
• Cost-Effective Solution: Integration of multiple functions into a single chip reduces overall system cost.
• Easy Integration: Its comprehensive features and diagnostic capabilities ensure seamless integration into existing and new systems.

Additional Details:

The XRT91L30IQTR supports both T1 (1.544 Mbps) and E1 (2.048 Mbps) data rates, as well as J1. It incorporates integrated pulse shaping and line build-out, which are critical for optimizing signal transmission over various cable types and lengths. The device also features jitter attenuation circuitry, which helps to reduce jitter accumulation and maintain signal quality. The clock recovery function ensures accurate data sampling and reliable performance. The loopback testing capability allows for easy system diagnostics and troubleshooting. The device typically operates from a 3.3V power supply.