MK2049-45SILF

Clock Generators, PLLs, Frequency Synthesizers Overview

The MK2049-45SILF is a PLL clock synthesizer IC manufactured by Renesas Electronics Corporation, formerly IDT. It operates on a single 3.3V supply (3.15V to 3.45V) and is housed in a 20-pin SOIC package with a width of 7.50mm. The device supports a maximum frequency of 51.84MHz and includes divider and multiplier capabilities. It functions as a 1:3 ratio clock generator, suitable for communications applications requiring precise frequency synthesis within the -40°C to +85°C operating temperature range.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• PLL Clock Synthesizer with 1:3 input-to-output ratio
• Maximum output frequency of 51.84MHz
• Single 3.3V supply operation (3.15V ~ 3.45V)
• 20-SOIC package (0.295" / 7.50mm width)

Clock Generators, PLLs, Frequency Synthesizers Applications

• Communications systems clock generation
• Frequency synthesis for digital circuits
• Jitter attenuation buffer modes

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

The MK2049-45SILF is listed as obsolete or end-of-life by multiple distributors. Verification of current availability requires checking specific authorized channels, as standard stock may be unavailable. Alternative packages such as tape-and-reel variants (e.g., MK2049-45SILFTR) may also be discontinued. Confirm final purchase status directly with the manufacturer or authorized agents before design finalization.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a fixed-ratio 1:3 PLL clock synthesizer is required for 3.3V logic systems. Ensure the design accommodates the 20-SOIC footprint and the specified voltage range. Verify that the 51.84MHz maximum frequency meets system timing requirements. Consider thermal management within the -40°C to +85°C industrial grade range.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the MK2049 series of communications clock PLLs originally developed by IDT, now under Renesas Electronics. The series includes variants like the MK2049-36 and MK2049-45, designed for generating specific telecom frequencies. The MK2049-45 specifically targets applications needing 51.84MHz outputs with internal multiplication/division capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the part is obsolete, engineers should consult Renesas for recommended replacements or evaluate generic PLL synthesizers with compatible pinouts and electrical specifications.