SY75576LKY

Clock Buffers, Drivers Overview

The SY75576LKY is a high-speed, fully differential 1:4 clock fanout buffer designed for PCI-Express applications. It accepts and outputs HCSL or LVDS logic levels, operating from a 3.3V ± 5% power supply (3.135V to 3.465V). The device provides four identical output copies with ultra-low phase jitter of 137fsrms at 200MHz and maximum 50ps output-to-output skew. It supports a maximum frequency of 267MHz for HCSL and 100MHz for LVDS, with a propagation delay of 2ns. Available in a 20-pin TSSOP package, it functions within the industrial temperature range of −40°C to +85°C.

Clock Buffers, Drivers Feature Summary

• Four differential pairs of LVDS or HCSL outputs
• Ultra-low phase jitter: 137fsrms at 200MHz
• Maximum 50ps output-to-output skew
• Dual differential inputs accepting LVDS or HCSL logic levels

Clock Buffers, Drivers Applications

• Clock distribution
• PCI-Express systems
• Servers
• Switches
• Routers

Clock Buffers, Drivers Procurement Notes

Verify the component origin as Micrel, now part of Microchip Technology. Confirm the specific ordering suffix 'KY' corresponds to the TSSOP-20 lead-free package with Matte-Sn finish. Ensure the datasheet revision matches the required specifications for the design.

Clock Buffers, Drivers Selection Notes

Select this buffer when low jitter and precise skew are critical for high-speed clock distribution. Choose between HCSL or LVDS termination based on the source driver requirements. Verify that the 3.3V supply voltage aligns with the system's power architecture and that the 20-pin TSSOP package fits the PCB layout constraints.

Clock Buffers, Drivers Part Context

The SY75576L is part of Micrel’s PrecisionEdge™ product line, which focuses on high-speed, ultra-low jitter clock buffers. This series is optimized for demanding digital communication applications requiring signal integrity and timing precision across multiple output channels.

Clock Buffers, Drivers Replacement Considerations

Check for updated Microchip Technology documentation if sourcing from new distributors. Verify pin compatibility and electrical parameters against any alternative fanout buffers before substitution.