SY89875UMG-TR

Overview

The SY89875UMG-TR is a Precision Edge® integrated circuit featuring a programmable clock divider and a 1:2 fanout buffer. It accepts high-speed differential inputs (CML, LVPECL, 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, within-device skew under 15ps, total jitter below 10ps peak-to-peak, and cycle-to-cycle jitter below 1ps RMS.

Feature Summary

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

Applications

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

Procurement Notes

Verify that the ordering suffix 'UMG' corresponds to the Pb-Free MLF-16 package variant as specified in the datasheet. Confirm the lead finish is NiPdAu. Ensure the component meets industrial temperature range requirements (-40°C to +85°C). Check for RoHS compliance status relative to current manufacturing standards.

Selection Notes

Select this component when a single-ended or differential clock signal requires division and distribution to two LVDS loads. The unique VT pin allows interface flexibility without external termination networks for most logic standards. Ensure the input signal swing and common mode voltage align with the specific interface application (DC vs. AC coupled) defined in the datasheet diagrams.

Part Context

This part belongs to the Micrel Precision Edge® family, now manufactured under Microchip Technology. The SY89875U specifically addresses applications requiring low-skew clock distribution with frequency division capabilities. It serves as a solution for translating higher frequency clocks (e.g., OC-12) to lower frequencies (e.g., OC-3) in telecommunications infrastructure.

Replacement Considerations

The SY89872U is a related product offering similar 2.5V, 2.5GHz Any Diff. In-to-LVDS functionality with a programmable clock divider and fanout buffer. Verify pin compatibility and specific frequency requirements before substitution.