SY89827LHI

Clock Buffers, Drivers Overview

The SY89827LHI is a high-performance bus clock driver manufactured by Micrel, Inc. It features dual LVPECL or HSTL inputs and provides ten differential 1.5V HSTL compatible outputs per channel. The device supports configurable operation as either a dual-channel 10-output or a single-channel 20-output clock driver. Key electrical specifications include a maximum toggle frequency exceeding 500MHz, within-device skew of less than 50ps, propagation delay under 1.5ns, and rise/fall times below 700ps. It operates with a 3.3V core supply and a 1.8V output supply.

Clock Buffers, Drivers Feature Summary

• Dual input configuration supporting both LVPECL and HSTL logic levels via CLK_SEL pins
• Configurable architecture allowing selection between dual 1:10 or single 1:20 output modes
• Low jitter design achieving 186fs RMS phase jitter at 622MHz
• Synchronous Output Enable (OE) function to prevent runt clock pulses during state transitions

Clock Buffers, Drivers Applications

• High-performance personal computers
• Workstations
• Parallel processor-based systems
• High-performance computing applications
• Communications equipment

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix when sourcing components. The 'I' suffix indicates an industrial operating temperature range (-40°C to +85°C). The 'H' suffix denotes the H64-1 package type. Confirm lead finish requirements; standard versions use Sn-Pb, while 'Y' variants offer Pb-Free Matte-Sn finishes. Ensure compatibility with existing PCB layouts for the 64-pin TQFP form factor.

Clock Buffers, Drivers Selection Notes

Select this component for designs requiring precise alignment of ultra-low skew signals across a large number of destinations. It is suitable for low voltage (3.3V/1.8V) environments needing significant fanout capability. Consider the SY89824L if greater HSTL fanout capacity is required. Ensure proper termination resistors are included for HSTL inputs and outputs to maintain signal integrity.

Clock Buffers, Drivers Part Context

This part belongs to the Precision Edge series of clock drivers from Micrel, Inc. The SY89827L is designed to replace older generation buffers that could not achieve similar skew performance with high output counts. It serves as a critical interface in complex digital systems where clock distribution accuracy directly impacts system stability and data throughput.

Clock Buffers, Drivers Replacement Considerations

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