8T49N287A-999NLGI

Overview

The 8T49N287A-999NLGI is a Universal Frequency Translator (UFT) clock generator belonging to the FemtoClock NG series by Renesas Electronics. It functions as a clock synthesizer and jitter cleaner compliant with GR.1244-CORE Stratum specifications. The device supports multiple input formats including HCSL, LVCMOS, LVDSM, LVHSTL, LVPECL, and crystal inputs. It provides differential outputs in HSCL, LVCMOS, LVDS, and LVPECL configurations. Operating within a supply voltage range of 2.375V to 3.465V, it supports frequencies up to 1GHz and operates across a temperature range of -40°C to 85°C.

Feature Summary

• Compliant with GR.1244-CORE Stratum timing standards for network synchronization
• Supports multiple input/output interface formats including LVPECL, LVDS, and HCSL
• Integrated PLL with bypass capability for flexible clock management
• Available in 72-VFQFN exposed pad package

Applications

• Telecommunications infrastructure requiring Stratum-level clock accuracy
• High-speed data transmission systems needing low-jitter clock synthesis
• Network equipment utilizing Universal Frequency Translation for frequency conversion

Procurement Notes

Verify component authenticity through authorized Renesas distributors due to potential counterfeit risks. Confirm RoHS3 compliance status prior to integration. Check current lifecycle status as discontinuation notices may affect long-term availability. Ensure proper ESD handling procedures are followed during assembly given the surface mount packaging.

Selection Notes

Select this model when GR.1244-CORE Stratum compliance is mandatory for the application. Verify that the required input and output voltage levels match the supported HCSL, LVCMOS, LVDSM, LVHSTL, or LVPECL options. Ensure the design accommodates the 72-VFQFN thermal requirements and the specified 2.375V to 3.465V power supply constraints.

Part Context

This component is part of the 8T49N287 family, specifically designed for high-performance clock generation and jitter cleaning. It shares architectural similarities with other FemtoClock NG devices but is distinguished by its specific pinout and configuration options tailored for Stratum applications. It serves as a critical timing element in synchronous digital hierarchy networks.

Replacement Considerations

Direct replacements include other models within the 8T49N287 family such as the 8T49N287-998NLGI or 8T49N287-002NLGI, provided pin compatibility and electrical parameters align. Cross-referencing with the 8T49N285A or 8T49N286A series may be necessary if form factor differences are acceptable.