CY26121ZXI-21T

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY26121ZXI-21T is a PacketClock Spread Spectrum Clock Generator manufactured by Cypress Semiconductor Corp. It is designed to reduce electromagnetic interference (EMI) in high-speed digital systems by modulating the output clock frequency. The device typically operates with a single supply voltage and features multiple differential or single-ended outputs to drive various loads. It supports programmable spread spectrum characteristics, allowing designers to optimize EMI performance while maintaining system timing integrity. The component is housed in a small surface-mount package suitable for space-constrained applications.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrated spread spectrum modulation to minimize radiated emissions
• Multiple output drivers supporting diverse load requirements
• Programmable configuration for flexible clock generation
• Compact surface-mount packaging for efficient board layout

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-speed data communication interfaces
• Computer motherboards and peripheral cards
• Telecommunications equipment requiring low EMI
• Consumer electronics with strict EMC regulations

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the exact suffix 'ZI-21T' against official Cypress datasheets to confirm pinout and electrical specifications. Ensure compatibility with existing PCB footprints and power delivery networks. Confirm RoHS compliance status if required by regional regulations. Cross-reference with current product lifecycle status to avoid obsolescence risks during production.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when EMI reduction is critical without sacrificing clock stability. Compare output drive strength and voltage levels against target loads. Evaluate the available spread spectrum depth versus jitter tolerance of downstream receivers. Consider alternative packages if thermal or spatial constraints differ from standard implementations.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the PacketClock family of clock generators designed for EMI mitigation. It complements other Cypress clock solutions by offering integrated spread spectrum capabilities. The ZXI variant indicates specific package and temperature range characteristics within the broader product line.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Check for direct substitutes like CY26121ZXC-21T or CY26121ZXS-21T depending on package and speed grade. Verify functional equivalence regarding output configurations and spread spectrum parameters before substitution.