SY89875UMG

Overview

The SY89875UMG is a Precision Edge® integrated circuit featuring a programmable clock divider and a 1:2 fanout buffer. It accepts high-speed differential inputs (CML, PECL, LVDS, HSTL) and divides the frequency by ratios of 1, 2, 4, 8, or 16 using parallel programming pins. The device provides low-jitter LVDS outputs with guaranteed AC performance exceeding 2.0 GHz maximum input frequency. Key electrical parameters include a supply voltage of 2.375V to 2.625V, cycle-to-cycle jitter under 1ps RMS, total jitter under 10ps peak-to-peak, and within-device skew under 15ps. It operates from -40°C to +85°C in a 16-pin MLF package.

Feature Summary

• Integrated programmable divider (÷1, ÷2, ÷4, ÷8, ÷16) and 1:2 fanout buffer
• Flexible input termination 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 termination and output disable function

Applications

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

Procurement Notes

Verify the ordering suffix when sourcing components. The 'G' suffix indicates a Pb-Free package with NiPdAu lead finish, while 'I' denotes Sn-Pb finish. Ensure the 'TR' suffix is included if tape and reel packaging is required for automated assembly. Confirm that the specific variant matches the intended lead finish and packaging format requirements.

Selection Notes

Select this component for applications requiring precise clock division and distribution with minimal jitter. The unique VT pin allows flexible interfacing with various logic standards without external termination networks. Ensure the design accommodates the 2.5V supply requirement and utilizes the exposed pad on the MLF-16 package for thermal management and grounding.

Part Context

This device belongs to Micrel's Precision Edge® family, designed for high-performance timing applications. Originally manufactured by Micrel, Inc., it is now supported under Microchip Technology. The SY89875U serves as a specialized solution for converting and dividing high-frequency clock signals in telecommunications and computing infrastructure.

Replacement Considerations

The SY89872U is a related product offering similar functionality with a 2.5GHz maximum frequency rating. Verify compatibility regarding package dimensions and pinout when considering alternative devices within the same series.