8T49N285-999NLGI8

Overview

The Renesas 8T49N285-999NLGI8 is a FemtoClock NG Universal Frequency Translator (UFT) clock synthesizer and jitter cleaner. It supports Stratum 3E/GR.1244 compliance for telecommunications applications. The device features an integrated Phase-Locked Loop (PLL) with bypass capability, accepting crystal or differential input signals. It generates up to eight output clocks with frequencies reaching 1 GHz. Power supply voltage ranges from 2.375V to 3.465V. The component is housed in a 72-VFQFN package with an exposed pad, designed for surface-mount installation.

Feature Summary

• Universal Frequency Translator architecture supporting multiple input/output ratios
• Stratum 3E/GR.1244 compliant jitter cleaning performance
• Integrated PLL with bypass mode for low-power operation
• Supports LVCMOS, LVPECL, HCSL, and LVDS output formats

Applications

• Telecommunications base station synchronization
• High-speed data converter clocking
• Network infrastructure timing distribution
• SerDes interface clock generation

Procurement Notes

Verify the exact suffix against official Renesas documentation, as '999' typically denotes specific programming or packaging variations. Confirm availability status through authorized distributors, as lead times may vary based on production cycles. Ensure ESD handling protocols are followed during storage and assembly due to moisture sensitivity classification.

Selection Notes

Select this model when Stratum 3E jitter specifications are required for telecom equipment. Compare output count and format requirements against similar UFT devices like the 8T49N286A if more inputs or different pinouts are needed. Verify that the 72-VFQFN footprint matches the PCB layout constraints and thermal design requirements for the target application environment.

Part Context

This part belongs to the FemtoClock NG family of programmable clock generators. It serves as a successor to earlier jitter cleaner models, offering enhanced flexibility through universal frequency translation capabilities. The 8T49N285 series is widely used in high-performance networking gear requiring precise timing alignment.

Replacement Considerations

The 8T49N285A-999NLGI8 is a compatible alternative within the same product line. Check datasheet revisions for any changes in electrical characteristics or pin compatibility before substitution.