CY25404ZXI226T

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY25404ZXI226T is a Quad PLL Programmable Clock Generator with Spread Spectrum in a 20-pin TSSOP package. It features four independent PLLs generating output frequencies from 3 to 166 MHz, supporting input crystals (8–48 MHz) or external clocks (8–166 MHz). The device offers nine clock outputs across three banks, each independently configurable for supply voltages of 1.8 V, 2.5 V, 3.0 V, or 3.3 V. It supports programmable spread spectrum modulation profiles and glitch-free frequency switching via eight selectable frequency sets.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Four fully integrated phase-locked loops enable synthesis of up to four independent frequencies from a single reference source.
• Programmable spread spectrum capability on two PLLs provides electromagnetic interference reduction with center or down spread options.
• Nine clock outputs are grouped into three banks with independent voltage supplies, allowing mixed-voltage system integration.
• Glitch-free frequency switching ensures uninterrupted system operation when transitioning between pre-programmed frequency sets.

Clock Generators, PLLs, Frequency Synthesizers Applications

• PC motherboard clock distribution
• Consumer electronics timing synchronization
• Portable device power management
• Networking equipment signal generation

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix '226T' against official Infineon ordering documentation to confirm factory programming parameters. Confirm industrial temperature range (-40°C to +85°C) requirements match the 'ZXI' designation. Ensure tape and reel packaging specifications align with automated assembly needs. Cross-reference the part number with current lifecycle status to avoid obsolescence risks.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when multiple independent clock domains are required from a single crystal. Verify that the required output drive strengths and voltage levels fall within the supported ranges. Consider the spread spectrum profile requirements for EMI compliance. Ensure the input reference frequency matches the available crystal or external clock sources.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the CY25404 family of quad PLL clock generators. It is manufactured by Infineon Technologies, formerly Cypress Semiconductor. The device is designed for applications requiring flexible clock synthesis with low jitter and programmable spread spectrum capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Check for direct substitutes within the CY25404 series with different suffixes. Verify pin compatibility and electrical specifications before substitution. Consult official replacement guides for end-of-life notifications.