8T49N004A-051NLGI8

Overview

The 8T49N004A-051NLGI8 is a programmable clock generator from the FemtoClock NG series by Renesas Electronics. It features a single PLL and four LVPECL outputs, operating at a maximum frequency of 300MHz. The device accepts differential inputs including HCSL, LVDS, and LVPECL levels. It functions as a frequency synthesizer with an input-to-output ratio of 1:4. Power supply ranges from 2.375V to 3.465V, and it operates within a temperature range of -40°C to 85°C. The component is housed in a 32-VFQFN package with an exposed pad.

Feature Summary

• Generates low-jitter clock signals using fourth-generation FemtoClock NG PLL technology
• Supports flexible differential input levels including LVPECL, LVDS, and HCSL
• Provides selectable output configurations via I2C programming interface
• Integrates internal crystal oscillator or external reference clock capabilities

Applications

• High-speed serial communication interfaces requiring precise timing
• Networking equipment and data center infrastructure
• Telecommunications base stations and backplane systems
• Test and measurement instruments demanding low phase noise

Procurement Notes

Verify the specific suffix code against official Renesas documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for obsolescence notices or product change notifications that may affect long-term availability. Ensure the ordering part number matches the required output voltage and package type exactly.

Selection Notes

Select this component when a single PLL solution with multiple LVPECL outputs is required. Consider the 300MHz maximum frequency limit for system clock requirements. Evaluate the 32-VFQFN package constraints for PCB layout. Compare against other FemtoClock NG variants if different input/output ratios or voltage levels are needed.

Part Context

This part belongs to the 8T49N004 family of programmable clock generators. It shares core architecture with other members like the 8T49N004I but differs in specific configuration options and output types. The FemtoClock NG series is designed for applications requiring ultra-low jitter performance and flexible clock distribution.

Replacement Considerations

Direct substitutes include other 8T49N004A variants with compatible suffixes. Verify pin compatibility and electrical specifications before replacing. Consult Renesas documentation for cross-reference information regarding package and functional equivalents.