8T49N283C-999NLGI#

Overview

The 8T49N283C-999NLGI is a FemtoClock Dual UFT clock generator manufactured by Renesas Electronics. It features dual differential outputs and supports input frequencies up to 1 GHz. The device operates within a supply voltage range of 2.375 V to 3.465 V and functions across an industrial temperature range of -40°C to +85°C. Packaged in a 56-VFQFN exposed pad, it integrates PLL functionality with bypass capabilities. The component utilizes LVCMOS and LVPECL output types, offering a 1:8 input-to-output ratio for precise timing signal generation in high-performance digital systems.

Feature Summary

• Dual differential output configuration for low-jitter signal distribution
• Maximum operating frequency of 1 GHz with integer/fractional PLL synthesis
• Wide supply voltage range (2.375 V ~ 3.465 V) supporting multiple logic standards
• Industrial temperature rating (-40°C to +85°C) for robust operation

Applications

• High-speed data communication interfaces requiring precise clocking
• Server and storage system timing architectures
• Network infrastructure equipment demanding low phase noise
• Test and measurement instruments needing stable frequency references

Procurement Notes

Verify the specific suffix 'NLGI' against the manufacturer's current ordering guide to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status directly from the latest datasheet revision. Check for any Product Change Notifications (PCNs) related to assembly sites or material changes that may affect qualification. Ensure moisture sensitivity level (MSL) handling procedures are followed during assembly.

Selection Notes

Select this component when dual differential outputs are required alongside a single input source. Verify that the 56-VFQFN footprint fits the PCB layout constraints. Ensure the design accommodates the 2.375 V to 3.465 V supply range. Compare jitter performance metrics against application requirements to confirm suitability for high-speed serial links.

Part Context

This part belongs to the Renesas FemtoClock NG family of universal frequency translators. It shares architectural similarities with other 8T49N series devices but is distinguished by its dual differential output capability and specific pinout configuration. It serves as a specialized solution for applications requiring multiple synchronized clock domains derived from a single reference.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific variant are not available in the provided documentation. Consult the official Renesas selection guide for compatible alternatives within the 8T49N series based on output count and package requirements.