SY89829UHY-TR

Clock Buffers, Drivers Overview

The SY89829UHY-TR is a high-performance dual 1:10 or single 1:20 LVPECL clock driver manufactured by Microchip Technology. It operates on 2.5V or 3.3V supplies and accepts multiplexed LVDS or LVPECL inputs via CLK_SEL pins, featuring internal 100Ω termination for LVDS signals. The device provides 20 differential LVPECL outputs with guaranteed AC parameters including a maximum toggle frequency of 2 GHz, within-device skew under 35 ps, and part-to-part skew under 200 ps. It includes synchronous output enable control to prevent runt pulses and is housed in a 64-pin EPAD-TQFP package.

Clock Buffers, Drivers Feature Summary

• Dual 1:10 fanout buffer/translator supporting redundant clock switchover
• Multiplexed inputs accepting LVDS (with 100Ω internal termination) or LVPECL
• Guaranteed performance: >2 GHz max toggle frequency and <50 ps channel-to-channel skew
• Synchronous Output Enable (OE) pin prevents runt clock pulse generation

Clock Buffers, Drivers Applications

• High-performance PCs and workstations
• Parallel processor-based systems
• Redundant LVPECL or LVDS bus clock switchover

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'HY' confirms the Pb-Free Matte-Sn finish and industrial temperature range (-40°C to +85°C). Confirm the '-TR' suffix indicates Tape and Reel packaging. Ensure compatibility with the 64-pin EPAD-TQFP footprint and exposed pad soldering requirements for thermal management.

Clock Buffers, Drivers Selection Notes

Select this component when low voltage (2.5V/3.3V) operation and precise signal alignment are required across many outputs. The integrated LVDS termination simplifies design by removing external resistors. Verify that the synchronous OE requirement aligns with system timing constraints to ensure clean enable/disable transitions without generating glitches.

Clock Buffers, Drivers Part Context

This device belongs to the Precision Edge® family from Micrel, now Microchip Technology. It consolidates functions typically requiring multiple discrete devices into a single chip, reducing board space and improving timing budgets by eliminating inter-device skew associated with multi-chip solutions.

Clock Buffers, Drivers Replacement Considerations

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