MK5811CMLF

Overview

The MK5811CMLF is a low EMI clock generator IC manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 3V to 3.63V and supports an input frequency range of 4MHz to 32MHz, providing a dithered output at the same frequency (1:1 ratio). The device utilizes a proprietary analog and digital Phase Locked Loop (PLL) technology to spread the frequency spectrum, reducing peak emissions on odd harmonics by 8dB to 16dB typical. It features LVCMOS outputs and is housed in an 8-SOIC package with a width of 3.90mm. The commercial temperature grade covers 0°C to 70°C.

Feature Summary

• Generates low EMI output clocks from clock or crystal inputs using PLL-based frequency dithering
• Supports centered and down spread modes for EMI reduction
• Accepts input frequencies between 4MHz and 32MHz with 1x multiplication
• Includes power-down functionality and Pb-free packaging

Applications

• Printers
• Flat panel controllers

Procurement Notes

Verify component status as the MK5811C series is listed as obsolete in public records. Confirm availability through authorized distributors or secondary market sources. Ensure the specific suffix MLF corresponds to the 0°C to 70°C operating range and tube packaging. Cross-reference datasheet revisions to confirm pinout and electrical characteristics match design requirements before procurement.

Selection Notes

Select this component when low EMI is required for consumer applications without frequency multiplication. Compare against MK5811CMILF for extended industrial temperature ranges (-40°C to 85°C). Verify that the 1:1 frequency ratio meets system timing needs, as other variants like MK5812 (2x) or MK5814C (4x) offer different multiplication factors. Ensure the 3.3V supply voltage aligns with the target circuit design.

Part Context

The MK5811CMLF belongs to the MK5811C family of low EMI clock generators originally developed by IDT and later acquired by Renesas Electronics. This family is designed to mitigate electromagnetic interference in high-speed digital systems by spreading the clock signal's energy spectrum. The 'MLF' suffix denotes the lead-free, commercial temperature variant in an 8-pin SOIC package.