SY898535LKY-TR

Clock Buffers, Drivers Overview

The SY898535LKY-TR is a precision differential fanout buffer manufactured by Micrel, now part of Microchip Technology. It translates single-ended LVCMOS or LVTTL inputs to four differential 3.3V LVPECL outputs. The device features two selectable clock inputs (CLK0 and CLK1) with an asynchronous clock enable pin synchronized to the input signal to prevent runt pulses. Operating from a 3.3V ±5% supply, it supports maximum output frequencies up to 235MHz with propagation delays under 1.9ns and output skew below 30ps. It is housed in a 20-pin TSSOP package and operates within the industrial temperature range of –40°C to +85°C.

Clock Buffers, Drivers Feature Summary

• Translates LVCMOS/LVTTL inputs to four differential 3.3V LVPECL copies
• Features two selectable single-ended clock inputs (CLK0/CLK1)
• Synchronized clock enable prevents runt pulses during assertion/de-assertion
• Guaranteed low skew: <30ps output-to-output and <250ps part-to-part

Clock Buffers, Drivers Applications

• Gigabit Ethernet
• 10 Gigabit Ethernet
• SONET/SDH
• PCI interfaces

Clock Buffers, Drivers Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the tape and reel packaging variant as specified in the datasheet. Confirm the component source is Micrel or its successor entity, Microchip Technology, to ensure authenticity. Check for the Pb-Free Bar-Line Indicator marking on the package. Ensure the procurement channel provides valid traceability documentation for this specific industrial-grade part number.

Clock Buffers, Drivers Selection Notes

Select this component when interfacing LVCMOS or LVTTL logic sources to LVPECL loads requiring low skew distribution. The device requires a 3.3V ±5% power supply. Consider the 20-pin TSSOP footprint for PCB layout. Verify that the required frequency does not exceed the 235MHz maximum operating limit. Ensure the application environment stays within the –40°C to +85°C industrial temperature range.

Clock Buffers, Drivers Part Context

This component belongs to Micrel’s Precision Edge product line, designed for high-speed clock distribution. The SY898535L series specifically addresses the need for translating standard logic levels to LVPECL standards in networking and server applications. The 'K' indicates the 20-pin TSSOP package, while 'Y' denotes the industrial temperature range.

Clock Buffers, Drivers Replacement Considerations

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