8T49N241-998NLGI8

Overview

The Renesas 8T49N241-998NLGI8 is a FemtoClock NG Ultra-Femto (UFT) clock synthesizer and jitter cleaner. It features one integer and three fractional PLLs, supporting output frequencies up to 1 GHz with an integrated 25 MHz reference oscillator. The device utilizes a 40-VFQFN exposed pad package and operates on a single 3.3V supply (2.375V to 3.465V). It includes an onboard EEPROM for configuration storage and supports LVPECL outputs. The component is RoHS3 compliant and classified as End-of-Life.

Feature Summary

• Ultra-low phase noise performance with 0.35 ps RMS jitter integration.
• Integrated 25 MHz crystal oscillator eliminates external reference requirements.
• Configurable via onboard EEPROM for flexible system deployment.
• Supports differential LVPECL output signaling standards.

Applications

• Telecommunications base stations requiring Stratum 3E/GR-1244 compliance.
• High-speed data transmission equipment needing low-jitter clocking.
• Network infrastructure utilizing UFT synchronization standards.

Procurement Notes

This part number is officially listed as End-of-Life by the manufacturer. Verification of current availability requires checking authorized distributors for remaining stock or obsolete inventory. Standard factory packaging quantities may apply to available lots. Confirm RoHS3 compliance status through official datasheets before procurement.

Selection Notes

Select this component for applications demanding ultra-femto jitter performance in telecommunications environments. Ensure design compatibility with LVPECL output levels and 3.3V power domains. Verify that the integrated 25 MHz reference meets system timing accuracy requirements without external oscillators.

Part Context

The 8T49N241 belongs to the FemtoClock NG family, designed for high-performance clock synthesis. The -998 suffix indicates specific factory programming and configuration settings. This model serves as a successor to earlier ICS84330 series devices, offering improved jitter specifications and integrated reference capabilities.

Replacement Considerations

Officially listed similar replacements include the 8T49N241-994NLGI, 8T49N241-998NLGI, and 8T49N242-998NLGI8. These variants share the same core architecture but may differ in pre-programmed configurations or package types. Validate electrical pinouts and software compatibility when substituting.