8T49N222B-110NLGI8

Overview

The 8T49N222B-110NLGI8 is a FemtoClock NG Universal Frequency Translator manufactured by Renesas Electronics. It features one fractional-feedback PLL capable of functioning as a frequency translator with jitter attenuation or a frequency synthesizer. The device supports up to four independent output dividers, generating frequencies from 8kHz to 1GHz (differential) or 8kHz to 250MHz (LVCMOS). It accepts multiple input levels including LVPECL, LVDS, LVHSTL, HCSL, and crystals. Powered by 2.375V to 3.465V, it operates between -40°C and 85°C in a 48-VFQFN package.

Feature Summary

• Single fractional-feedback PLL for frequency translation and jitter attenuation
• Four independent output dividers supporting LVPECL, LVDS, HCSL, and LVCMOS
• Hitless switching with phase-slope limiting for output phase transient control
• Register programmable via I²C or external EEPROM

Applications

• 10G/40G/100G SONET/SDH and Ethernet network line cards
• Wireless base station baseband units
• Carrier Ethernet switches and OTN equipment
• GbE/10GbE/100GbE Synchronous Ethernet line card applications

Procurement Notes

Verify the specific suffix '110' against official Renesas documentation to confirm factory pre-programmed configuration settings. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to procurement. Ensure the 48-VFQFN exposed pad footprint matches the target PCB layout requirements.

Selection Notes

Select this component when a single PLL solution is required for high-frequency clock generation up to 1GHz. It is suitable for designs needing flexible input/output voltage levels and hitless switching capabilities. Compare against other FemtoClock NG models if multiple independent PLLs or different pin counts are necessary for the system architecture.

Part Context

This part belongs to the FemtoClock NG family of universal frequency translators. These devices integrate low-phase noise frequency translation, jitter attenuation, and monitoring functions. They are designed to replace discrete clock solutions in networking and communication systems requiring precise timing synchronization.

Replacement Considerations

Direct replacements within the same series include the 8T49N222B-125NLGI8. Verify register compatibility and output drive strength when substituting with other variants in the 8T49N222B family.