CY2291FXKJ

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY2291FXKJ is a three-PLL general-purpose EPROM programmable clock generator manufactured by Cypress Semiconductor Corp. It integrates three phase-locked loops to generate up to three custom frequencies from external sources. The device supports factory-programmable options and offers low-skew, low-jitter, high-accuracy outputs. Key features include power-management capabilities such as shutdown, output enable, and suspend modes, along with frequency select options and smooth slewing on the CPUCLK output. It allows configurable 3.3V or 5V operation and is housed in a standard 20-pin SOIC package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Three integrated phase-locked loops for generating multiple custom frequencies
• EPROM programmability with factory-programmable device option
• Power-management options including Shutdown, OE, and Suspend modes
• Configurable 3.3V or 5V operation in a 20-pin SOIC package

Clock Generators, PLLs, Frequency Synthesizers Applications

• Systems requiring critical industry-standard timing requirements
• Applications supporting low-power designs with power management needs
• Downstream PLL synchronization via CPUCLK output

Clock Generators, PLLs, Frequency Synthesizers Part Context

The CY2291FXKJ belongs to the CY2291 family of three-PLL general-purpose EPROM programmable clock generators. This series includes variants such as the CY2291, CY2291F, and CY2291FI. The 'FX' suffix typically denotes the factory-programmable version of the device, distinguishing it from field-programmable counterparts within the same product line.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements within the CY2291 family include CY2291, CY2291F, and CY2291FI. Verify that the specific variant matches the required programmability (factory vs. field) and voltage configuration before substitution.