MK1709SLFTR

Clock Generators, PLLs, Frequency Synthesizers Overview

The MK1709SLFTR is a low EMI clock generator IC manufactured by Renesas Electronics Corporation, housed in an 8-SOIC package. It operates on a single 3.3V supply (3.135V to 3.465V) and supports frequencies up to 167MHz. The device utilizes a proprietary analog and digital PLL technology to dither the output clock, spreading the frequency spectrum to reduce electromagnetic interference peaks by 7dB to 14dB on odd harmonics. It accepts a high-speed clock input and provides a same-frequency dithered CMOS output without internal multiplication or division.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates low EMI output clock from a high-speed clock input using spread spectrum technology
• Reduces frequency amplitude peaks by 7dB - 14dB typical on 3rd - 19th odd harmonics
• Operates at frequencies up to 167MHz with a 1:1 input-to-output ratio
• Includes power-down mode for energy efficiency

Clock Generators, PLLs, Frequency Synthesizers Applications

• Dithering LCD interface clocks for flat panel graphics controllers
• Supporting all VGA modes from 40MHz to 167MHz
• Replacing crystals and oscillators in computer peripheral designs

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

The MK1709SLFTR is listed as obsolete across major distributors. Verification of availability requires checking specific stock status or end-of-life notices. Standard packaging quantity is 2,500 units per reel. Designers should confirm component lifecycle status before integration.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

This component is suitable for applications requiring a fixed 1:1 frequency relationship with low EMI characteristics. It requires an external high-speed clock input rather than a crystal. Ensure the design accommodates the 3.3V supply voltage and 8-SOIC footprint. Consider replacement options due to its obsolete status.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The MK1709 belongs to the MK1709 family of low EMI clock generators originally developed by IDT and later acquired by Renesas. Related variants include the MK1709AG (TSSOP package) and the MK1707 series. The MK1714-01/02 models are referenced for applications requiring crystal inputs or frequency multiplication.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, alternative components must be selected based on functional equivalence (low EMI, 167MHz max, 8-SOIC package) through independent engineering validation.