SY89875UMI-TR

Overview

The SY89875UMI-TR is a Precision Edge® programmable clock divider and 1:2 fanout buffer designed for low-jitter applications. 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-select pins. The device features unique internal termination accessible via a VT pin for flexible interfacing. It operates on a single 2.5V supply with a maximum input frequency of 2.0 GHz. Key performance metrics include less than 15ps within-device skew, under 10ps peak-to-peak total jitter, and under 1ps RMS cycle-to-cycle jitter. Outputs are LVDS compatible.

Feature Summary

• Integrated programmable divider (÷1, ÷2, ÷4, ÷8, ÷16) and 1:2 fanout buffer
• Low jitter performance: <10ps PP total jitter, <1ps RMS cycle-to-cycle jitter
• Flexible input interface with unique VT pin for CML, PECL, LVDS, and HSTL standards
• LVDS compatible outputs with guaranteed AC performance over temperature

Applications

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

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the Tape and Reel packaging format as specified in the manufacturer's documentation. Confirm the component is the Pb-Free version indicated by the 'G' suffix if required, noting that the provided datasheet lists 'SY89875UMITR' for Sn-Pb and 'SY89875UMGTR' for Pb-Free variants. Ensure the specific part number matches the desired lead finish and package configuration.

Selection Notes

Select this component when a low-skew, low-jitter solution is required to divide and distribute high-speed clocks up to 2.0 GHz. The device supports multiple logic standards through its VT pin, simplifying interface design for CML, LVDS, PECL, and HSTL sources. It is suitable for applications requiring precise timing distribution with minimal added jitter and flexible output loading options.

Part Context

This component belongs to the Precision Edge® family of clock drivers and distributors manufactured by Microchip Technology (originally Micrel). It is specifically categorized as a programmable clock divider and fanout buffer. The device is housed in a 16-pin MLF package and is designed for industrial temperature ranges (-40°C to +85°C).

Replacement Considerations

The SY89872U is listed as a related product with similar functionality (2.5V, 2.5GHz Any Diff. In-to-LVDS Programmable Clock Divider/Fanout Buffer). Verify electrical specifications and pin compatibility before substitution.