SY89874UMI-TR

Overview

The SY89874UMI-TR is a low-skew, low-jitter programmable clock divider and fanout buffer manufactured by Microchip Technology. It accepts high-speed differential inputs (CML, LVPECL, LVDS, HSTL) and divides the frequency by ratios of 2, 4, 8, or 16, or passes through the reference clock. The device features integrated internal termination for flexible input interfacing and provides two differential LVPECL outputs. Key electrical specifications include a maximum output toggle frequency of 2.5 GHz, within-device skew of less than 15 ps, and total jitter under 10 ps peak-to-peak. It operates on a single supply voltage ranging from 2.375 V to 3.63 V.

Feature Summary

• Integrated Programmable Clock Divider with ratios of 1, 2, 4, 8, and 16
• Low Jitter Design: <10 ps PP Total Jitter and <1 ps RMS Cycle-to-Cycle Jitter
• Flexible Input Termination via VT pin supporting DC/AC-coupled CML, PECL, LVDS, and HSTL
• Output Disable Function controlled by /RESET pin

Applications

• SONET/SDH Line Cards
• Transponders
• High-End Multiprocessor Sensors

Procurement Notes

Verify that the ordering suffix '-TR' corresponds to the Tape and Reel packaging configuration containing 1,000 units per reel. Confirm the package type is the 16-Lead 3 mm x 3 mm QFN. Ensure the temperature range matches the industrial specification of –40°C to +85°C. Cross-reference the part number against the manufacturer's Product Identification System to validate the specific variant.

Selection Notes

Select this component when a design requires dividing a high-frequency differential clock signal while maintaining low jitter performance. The internal termination simplifies interface circuits for various logic standards without external resistors. Ensure the system power supply falls within the 2.375 V to 3.63 V range. Verify that the required divider ratio (2, 4, 8, or 16) can be configured via the S0, S1, and S2 pins.

Part Context

The SY89874U belongs to Microchip's Precision Edge® family of clock buffers and dividers. This series focuses on high-performance timing solutions with guaranteed AC performance over temperature and voltage variations. The device integrates both division and buffering capabilities into a single compact package, reducing board space compared to discrete solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.