The DS25BR100TSD, manufactured by National Semiconductor (now Texas Instruments), is a 2.5 Gbps 1:1 Buffer/Repeater with Transmit De-Emphasis. This device is designed to extend the signaling distance and improve signal integrity in high-speed data transmission systems. It compensates for Inter-Symbol Interference (ISI) introduced by cables and backplanes, ensuring reliable data transfer. Note that this part is designated as END-OF-LIFE.

Applications:

• Backplanes: Used in backplane applications to improve signal integrity and extend transmission distances.
• Cable Extension: Employed to extend the reach of cables in high-speed data links.
• High-Speed Data Transmission: Suitable for applications requiring reliable data transfer at speeds up to 2.5 Gbps.
• Storage Systems: Incorporated in storage systems to enhance signal quality in data paths.
• Networking Equipment: Used in networking equipment to improve signal integrity over longer distances.

Features:

• 2.5 Gbps Operation: Supports data rates up to 2.5 Gbps.
• Transmit De-Emphasis: Compensates for ISI by pre-emphasizing the transmitted signal.
• Low Power Consumption: Minimizes power consumption, making it suitable for power-sensitive applications.
• Adjustable De-Emphasis Levels: Allows for fine-tuning of the de-emphasis to optimize signal integrity.
• Single Supply Operation: Operates from a single supply voltage, simplifying system design.

Benefits:

• Improved Signal Integrity: Enhances signal quality by compensating for ISI.
• Extended Transmission Distance: Increases the distance over which reliable data transmission can occur.
• Reduced Bit Error Rate (BER): Lowers the BER by improving signal quality.
• Simplified System Design: Simplifies the design of high-speed data links.
• Enhanced System Reliability: Improves the overall reliability of the data transmission system.

Additional Details:

The DS25BR100TSD operates from a 3.3V supply. It features adjustable transmit de-emphasis, allowing the user to optimize the signal for different cable lengths and backplane characteristics. The device is available in a space-saving package. The de-emphasis levels are adjustable to compensate for losses at different frequencies. The part is specifically designed to address signal integrity issues in high-speed backplane and cable interconnects. As this part is designated as END-OF-LIFE, consider alternative solutions for new designs.