SY89421VZC-TR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SY89421VZC-TR is a digital Phase Locked Loop (PLL) based on Micrel-Synergy differential PLL technology, manufactured by Microchip Technology. It operates with a reference input frequency range of 30MHz to 560MHz and supports up to 2000MHz using the HFIN input with an external VCO. The internal VCO covers a frequency range from 480MHz to 1120MHz. The device features PECL differential outputs, TTL-compatible select pins for N divider programming, and an external loop filter interface. It is supplied in a 20-pin SOIC package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Digital PLL supporting 30MHz to 560MHz reference input and up to 2000MHz with external VCO
• Internal VCO frequency range of 480MHz to 1120MHz
• PECL differential outputs with low jitter design
• TTL-compatible select pins (S1-S5) for configuring N divider and prescaler

Clock Generators, PLLs, Frequency Synthesizers Applications

• Workstations
• Advanced communications systems
• High-performance computing applications

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm that the ZCTR suffix indicates tape and reel packaging within the Z20-1 20-lead SOIC format. Ensure supply chain documentation matches the specific Micrel/Synergy origin before integration into production environments.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a high-frequency PLL with flexible feedback paths is required. The device supports both internal and external VCO configurations via Select pin S4. Use the S5 pin to enable divide-by-two prescaling for frequency doubling applications up to 1120MHz output.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the ClockWorks™ series of high-performance phase locked loops. It utilizes Micrel-Synergy differential PLL technology to provide excellent locking and tracking characteristics through a phase-frequency detector. The device allows flexibility for inserting additional off-chip circuitry in feedback paths.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

No public confirmed substitute part numbers are available.