MK5811CMILFT

Overview

The MK5811CMILFT is a low EMI clock generator IC manufactured by Renesas Electronics, packaged in an 8-pin SOIC. It utilizes proprietary analog and digital Phase Locked Loop (PLL) technology to dither high-emission clocks, thereby reducing electromagnetic interference in consumer applications. The device accepts a clock or crystal input within the 4 MHz to 32 MHz range and provides a same-frequency spread spectrum output. Key features include support for both centered and down spread modes, with typical peak reduction of 8 dB to 16 dB on odd harmonics from the 3rd through the 19th. The unit operates at a fixed voltage of 3.3 V and is designed using an advanced, low-power CMOS process.

Feature Summary

• Generates low EMI output clock via spread spectrum frequency dithering
• Accepts clock or crystal input with 4 MHz to 32 MHz frequency range
• Provides 1x frequency multiplication with centered or down spread options
• Typical harmonic peak reduction of 8 dB to 16 dB on 3rd through 19th odd harmonics

Applications

• Printers
• Flat panel controllers

Procurement Notes

The MK5811CMILFT is listed as obsolete across available distributor records. Verification of current availability requires checking official Renesas discontinuation notices or authorized channels for remaining stock or end-of-life management options. No active manufacturing data is present in the provided source material.

Selection Notes

Select this component when low EMI performance is required for 32 MHz maximum clock signals without frequency multiplication. Ensure the design supports a fixed 3.3 V supply and 8-pin SOIC footprint. Verify that the specific spread spectrum mode (centered or down) aligns with the target application's EMI mitigation strategy.

Part Context

This part belongs to the MK5811C series of low EMI clock generators. Related variants include the MK5811CMILF (tube packaging), MK5811CMLF (commercial temperature range), and MK5811CMLFT. Other family members like the MK5812 (2x multiplier) and MK5814C (4x multiplier) offer different frequency scaling capabilities while maintaining similar EMI reduction features.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is marked obsolete, engineering change orders may require evaluating newer Renesas VersaClock families or third-party low EMI clock generators with compatible pinouts and electrical specifications.