MK5811CMLFT

Overview

The MK5811CMLFT is a low EMI clock generator IC manufactured by Renesas Electronics. 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 dithered output. Key electrical specifications include an operating voltage of 3.3 V and a maximum frequency of 32 MHz. It features center and down spread capabilities with typical peak reduction of 8 dB to 16 dB on odd harmonics. The component is housed in an 8-SOIC package.

Feature Summary

• Generates low EMI output clock from clock or crystal input using PLL technology
• Supports center spread, down spread, and spread off settings
• Typical harmonic peak reduction of 8 dB to 16 dB on 3rd through 19th odd harmonics
• Operates at 3.3 V with advanced low-power CMOS process

Applications

• Printers
• Flat panel controllers
• Consumer electronics requiring low EMI clock generation

Procurement Notes

Verify current availability status as the MK5811CMLFT may be classified as obsolete. Confirm lead times and substitute options if active supply is unavailable. Ensure compliance with RoHS standards, as the part is available in lead-free packaging. Check for moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component when a fixed 1:1 frequency multiplication ratio is required with spread spectrum modulation. Compare against MK5812 (2x multiplier) or MK5814C (4x multiplier) if frequency scaling is needed. Verify that the input frequency range of 4 MHz to 32 MHz aligns with system requirements. Consider the 8-SOIC package constraints for PCB layout.

Part Context

The MK5811CMLFT belongs to the MK5811C series of low EMI clock generators originally developed by IDT, now part of Renesas Electronics. This series includes variants with different multiplication factors, such as the MK5812 for 2x and MK5814C for 4x outputs. The 'MLFT' suffix indicates the specific package type (SOIC), temperature range, and tape-and-reel packaging configuration.

Replacement Considerations

Publicly confirmed direct substitute part numbers are not provided in the source material. Designers should consult Renesas documentation for potential cross-reference recommendations or updated components within the same family.