5V49EE904NLGI8

Clock Generators, PLLs, Frequency Synthesizers Overview

The Renesas 5V49EE904NLGI8 is an EEPROM programmable clock generator belonging to the VersaClock III series. It features four internal phase-locked loops (PLLs) and a fast 400kHz I2C serial interface for configuration. The device supports input frequencies from 1 MHz to 200 MHz and generates output frequencies ranging from 4.9 kHz to 200 MHz. It utilizes a reference crystal input with programmable linear load capacitance, supporting frequencies between 8 MHz and 50 MHz. Each PLL includes a 7-bit reference divider and a 12-bit feedback divider, with one PLL offering fractional division capability. Two PLLs support spread spectrum generation. The component operates on a 3.3V core supply and is available in a VFQFPN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Four internal PLLs with independent frequency synthesis capabilities
• Non-volatile EEPROM storage for configuration retention without external memory
• Spread spectrum generation capability supported by two of the PLLs
• Programmable slew rate control and loop bandwidth for signal integrity optimization

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-performance computing systems requiring precise clock distribution
• Networking equipment such as routers and switches
• Industrial applications demanding stable timing signals across wide temperature ranges

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix '8' against official Renesas documentation to confirm pinout or electrical parameter variations compared to standard variants. Confirm RoHS compliance status through current datasheets. Check for active production status as some versions may be obsolete. Ensure I2C address settings align with system design requirements before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when multiple independent clock outputs are required from a single reference source. The EEPROM feature eliminates the need for external configuration memory, reducing board space. Verify that the 3.3V LVCMOS/LVTTL output standards match the receiving logic levels. Ensure the maximum output frequency of 200 MHz meets the target application's speed requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Renesas VersaClock III family, designed for versatile clock generation in complex digital systems. It serves as a replacement for older fixed-frequency oscillators where flexibility is needed. The 5V49EE904 variant provides a foundation for the NLGI8 version, which specifies the industrial temperature range and packaging details.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other 5V49EE904 variants with compatible packages. Verify if the 5V49EE904EVB evaluation board is available for prototyping. Cross-reference with 5P49V69xx series for newer VersaClock generations if lower power consumption is required.