SY55856UHI-TR

Overview

The SY55856UHI-TR is a SuperLite differential 2-channel precision CML delay line manufactured by Microchip Technology. It operates within a supply voltage range of 2.3V to 3.6V and supports maximum frequencies exceeding 2.5GHz with a throughput up to 5Gbps. The device provides a total adjustable delay range of ±350ps in 50ps increments, controlled via three digital select pins. Key electrical characteristics include a propagation delay of less than 384ps, rise/fall times under 120ps, and an output jitter below 1ps RMS. It is housed in a 32-pin EPAD-TQFP package.

Feature Summary

• Provides digitally controlled relative delay adjustment between two channels in precise 50ps steps
• Features fully differential CML inputs and source-terminated outputs optimized for high-speed signal integrity
• Includes a clock inversion control pin to manage phase alignment requirements

Applications

• Data communications systems requiring signal synchronization
• Telecom systems utilizing high-speed backplanes
• Signal de-skewing and pulse alignment applications

Procurement Notes

Verify the specific ordering suffix to confirm the tape and reel packaging format required for automated assembly processes. Ensure the component meets industrial temperature specifications if deployed in harsh environments. Confirm RoHS compliance status based on the exact part number variant selected for the design.

Selection Notes

Select this component when precise sub-nanosecond delay adjustments are necessary for clock-data alignment. Evaluate the 32-pin TQFP package constraints against available PCB real estate. Consider the single-ended or differential input compatibility requirements for the driving circuitry before finalizing the design.

Part Context

This device belongs to the SuperLite family of high-speed timing components originally developed by Micrel, Inc., which was subsequently acquired by Microchip Technology. The product line focuses on low-power, high-performance solutions for maintaining signal integrity in complex digital communication architectures.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Microchip resources for potential cross-references or updated family members.