SY89876LMG-TR

Overview

The SY89876LMG-TR is a 3.3V, 2.0GHz programmable clock divider and 1:2 fanout buffer featuring integrated internal termination. It accepts high-speed differential inputs (CML, PECL, LVDS, HSTL) via a flexible interface with VT and VREF-AC pins. The device provides selectable division ratios of 1, 2, 4, 8, or 16, with outputs in LVDS format. Key performance metrics include a maximum input frequency of 2.5 GHz, propagation delay under 870 ps, within-device skew below 15 ps, total jitter under 10 ps peak-to-peak, and cycle-to-cycle jitter under 1 ps RMS. It operates from -40°C to +85°C in a 16-pin MLF package.

Feature Summary

• Integrated programmable divider with ratios of 1, 2, 4, 8, and 16
• Flexible input termination accessible via VT pin for CML, PECL, LVDS, and HSTL standards
• Low jitter performance: <10ps PP total jitter and <1ps RMS cycle-to-cycle jitter
• LVDS-compatible outputs with internal 50Ω input termination

Applications

• SONET/SDH line cards
• Transponders
• High-end multiprocessor servers

Procurement Notes

Verify the ordering suffix 'TR' corresponds to the Tape and Reel packaging configuration as specified in the manufacturer's documentation. Confirm that the 'G' suffix indicates the Pb-Free variant with NiPdAu lead finish. Ensure the component meets RoHS compliance requirements for the intended application environment.

Selection Notes

Select this component when a low-skew, low-jitter solution is required to divide high-frequency clocks while maintaining LVDS output compatibility. The unique VT pin allows for easy interfacing with various logic standards without external termination components. Ensure the supply voltage is maintained at 3.3V ±10% and the operating temperature remains within the industrial range.

Part Context

This part belongs to the Precision Edge family of timing devices originally developed by Micrel, Inc., which was subsequently acquired by Microchip Technology. The device integrates both frequency division and buffering functions into a single compact package, reducing board space compared to discrete solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.