8T49N286-999NLGI8

Overview

The 8T49N286-999NLGI8 is a universal frequency translator within the FemtoClock NG family, manufactured by Renesas Electronics. It operates on a single supply voltage ranging from 2.375V to 3.465V and supports a maximum output frequency of 1GHz. The device features a 72-VFQFN exposed pad package with dimensions of 10x10mm. It accepts multiple input formats including LVPECL, LVDS, HCSL, LVCMOS, LVHSTL, and crystal oscillators. Output configurations include LVPECL, LVDS, and LVCMOS. The unit functions as a clock synthesizer or jitter cleaner with a 5:8 input-to-output ratio and includes integrated dividers.

Feature Summary

• Universal frequency translation supporting mixed input/output standards
• Maximum output frequency capability of 1GHz
• Integrated I2C programming interface for register configuration
• Low phase jitter performance typical of FemtoClock NG architecture

Applications

• Telecommunications infrastructure requiring Stratum timing
• Data center server platforms
• High-speed serial communication interfaces

Procurement Notes

Verify the specific suffix '999' against official Renesas documentation to confirm factory pre-programmed frequency settings. Confirm moisture sensitivity level (MSL 3) handling requirements during assembly. Ensure the 72-VFQFN thermal pad soldering process meets board layout specifications.

Selection Notes

Select this component when a fixed-frequency universal translator is required rather than a fully programmable generic synthesizer. Verify that the 5:8 input-to-output ratio aligns with system clock tree requirements. Compare against the 8T49N286A series if additional feature sets like GR.1244 compliance are necessary.

Part Context

This part belongs to the FemtoClock NG family of clock generators and jitter cleaners. It serves as a fixed-function variant designed for specific high-performance networking applications, distinct from the fully programmable 8T49N286A models which offer broader flexibility through software configuration.

Replacement Considerations

The 8T49N286A-999NLGI8 is a functional equivalent within the same package but offers enhanced configurability via I2C. Cross-reference pinouts to ensure compatibility.