CY25702FLXCT

Overview

The CY25702FLXCT is a programmable high-frequency crystal oscillator manufactured by Cypress Semiconductor. It utilizes an integrated phase-locked loop to synthesize output clock frequencies ranging from 1 MHz to 166 MHz based on an embedded input crystal. The device operates at 3.3V and features field-programmable configuration memory, allowing customization of the output frequency. It includes an Output Enable/Power Down function via Pin 1 and is housed in a 4-pin Ceramic LCC SMD package. The component supports industrial temperature ranges and offers low jitter performance suitable for system clocking.

Feature Summary

• Integrated PLL synthesizes output frequencies from 1 MHz to 166 MHz
• Field-programmable configuration memory for custom frequency settings
• 85 ps typical cycle-to-cycle jitter at 133 MHz output
• Output Enable and Power Down control via Pin 1

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required temperature grade and packaging format. The FLX suffix indicates field programming capability through distributors. Confirm the programmed frequency value with the supplier prior to order placement, as this parameter is unique to each unit and cannot be changed after manufacturing.

Selection Notes

Select the CY25702FLXCT when a programmable solution is required instead of a fixed-frequency oscillator. Ensure the design supports the 3.3V supply voltage and accommodates the 4-pin Ceramic LCC package dimensions. Consider the CY25701 if spread spectrum clocking functionality is needed for EMI reduction, as it serves as a direct replacement without PCB modifications.

Part Context

This part belongs to the CY25702 family of programmable crystal oscillators. The 'FLX' designation specifically denotes units programmed in the field by Cypress distributors, distinguishing them from factory-programmed variants. The device replaces standard fixed-frequency crystals in designs requiring flexible clock rates.

Replacement Considerations

The CY25701 is documented as a direct replacement if spread spectrum clocking is required, with no PCB modification needed. Other CY25702 variants differ primarily in temperature range (Commercial vs. Industrial) and programming method (Factory vs. Field).

FAQ

What is the maximum output frequency supported by the CY25702?

The maximum synthesized output clock frequency is 166 MHz.

How is the power-down function controlled?

Pin 1 can be configured as a Power Down pin; pulling it Low enables power down mode.

What is the typical cycle-to-cycle jitter specification?

The typical cycle-to-cycle jitter is 85 ps when the output frequency is 133 MHz.