CY25404ZXI223

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY25404ZXI223 is a Quad PLL Programmable Clock Generator with Spread Spectrum, manufactured by Infineon Technologies (formerly Cypress Semiconductor). It features four fully-integrated phase-locked loops capable of synthesizing frequencies from 3 to 166 MHz. The device supports input frequencies of 8 to 48 MHz via external crystal or 8 to 166 MHz via external reference clock. It provides up to nine programmable clock outputs across three independent voltage banks (1.8 V, 2.5 V, 3.0 V, or 3.3 V) and includes spread spectrum modulation for EMI reduction. Packaged in a 20-pin TSSOP, it operates within the industrial temperature range of -40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Four independent programmable PLLs enable synthesis of unrelated output frequencies from a single reference source.
• Spread spectrum capability on two PLLs allows configurable center or down modulation profiles for electromagnetic interference reduction.
• Nine clock outputs are organized into three separate driver banks, each supporting independent supply voltage selection.

Clock Generators, PLLs, Frequency Synthesizers Applications

• PC motherboard clock distribution
• Networking equipment timing
• Consumer electronics system synchronization

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific suffix matches the required industrial temperature grade and package configuration. Request official traceability documentation to ensure compliance with quality standards before integration into production systems.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when multiple independent clock domains are required from a single oscillator source. Ensure the application requires the industrial temperature rating (-40 °C to +85 °C) indicated by the 'I' suffix. Verify that the output drive strength and voltage levels align with the target load requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the CY25404 family of quad PLL clock generators. The 'ZXI' designation indicates a 20-pin TSSOP package with an industrial operating temperature range. The '223' suffix represents a factory-programmed configuration specific to customer frequency and feature requirements.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct pin-compatible replacements within the same family include other CY25404 variants with different temperature ratings or packaging options. Cross-family substitution requires verification of PLL count, output drive capabilities, and spread spectrum functionality compatibility.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency supported by the CY25404?

The device supports output frequencies ranging from 3 MHz to 166 MHz, depending on the selected output bank supply voltage.

How many independent voltage supplies are required for the outputs?

Three independent output bank supplies (VDD_CLK_B1, VDD_CLK_B2, VDD_CLK_B3) are required, allowing each bank of three outputs to operate at different voltage levels.

Can the device switch frequencies without glitches?

Yes, the device supports glitch-free frequency switching when utilizing the output dividers for frequency changes.