CY26580KOI-2T

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY26580KOI-2T is a PacketClock network applications clock generator manufactured by Cypress Semiconductor. It operates on a single 3.3V supply and features an integrated phase-locked loop for low-jitter, high-accuracy outputs. The device accepts a driven reference input of either 125 MHz or 25 MHz via the CLK pin, with frequency selection controlled by the SEL_25 pin. It generates two fixed output frequencies: 133.33 MHz and 100 MHz. The component is housed in a 20-pin SSOP (QSOP) package and supports industrial temperature ranges from -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrated phase-locked loop architecture ensures precision operation and low jitter performance.
• Provides dual fixed-frequency outputs at 133.33 MHz and 100 MHz for complex system timing requirements.
• Configurable reference input allows selection between 125 MHz and 25 MHz driven sources.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Network equipment requiring precise clock synchronization
• System designs needing multiple derived clock frequencies from a single source
• Industrial control systems operating within specified voltage and temperature limits

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the part number suffix against the manufacturer's ordering information table to confirm package type and tape-and-reel configuration. Ensure compatibility with the specified 3.3V supply voltage and industrial temperature range during procurement planning.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a fixed 133.33 MHz and 100 MHz output is required from a 125 MHz or 25 MHz driven reference. Confirm that the application does not require new design inclusion, as the datasheet notes it is not recommended for new designs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the PacketClock family of network applications clocks. It is designed to replace older variants such as those ending in -1, as specifications for -1 and -2 series parts are identical. The KOI-2T suffix indicates the Pb-free version in a 20-pin SSOP package supplied in tape and reel format.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Part numbers ending in -1 and -1T have been replaced by those ending in -2 and -2T. Specifications for these variants are identical, allowing for direct substitution where available.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What determines the input reference frequency?

The input reference frequency is determined by the logic level on the SEL_25 pin. A logic 0 selects 125 MHz, while a logic 1 selects 25 MHz.

Is the CY26580 suitable for new designs?

No, the datasheet explicitly states that the CY26580 is not recommended for new designs.

How is the reference input configured?

The reference input must be driven. The SEL_CLK pin should be set to logic 1 to enable the driven input mode.