8T49N004A-056NLGI

Overview

The Renesas 8T49N004A-056NLGI is a FemtoClock NG clock generator IC designed for low-jitter applications. It features a single PLL circuit with a 1:4 input-to-output ratio, supporting a maximum output frequency of 312.5MHz. The device accepts crystal inputs and provides differential LVPECL outputs. It operates within a supply voltage range of 2.375V to 3.465V and functions across an industrial temperature range of -40°C to +85°C. The component is housed in a 32-VFQFN package with an exposed pad, measuring 5x5mm.

Feature Summary

• Single PLL clock generator with 1:4 input-to-output ratio
• Maximum output frequency of 312.5MHz
• Differential LVPECL output configuration
• Crystal input interface

Applications

• High-speed data communication systems requiring precise clocking
• Networking equipment utilizing LVPECL interfaces
• Industrial control systems operating in extended temperature ranges

Procurement Notes

Verify the current lifecycle status as the product listing indicates 'Obsolete' or 'End of Life'. Confirm availability through authorized distributors or secondary market sources. Check for Product Change Notices (PCN) regarding assembly site changes or labeling updates issued in late 2022 and mid-2025. Ensure RoHS3 compliance matches specific project requirements.

Selection Notes

Select this component when a single PLL with four differential LVPECL outputs is required at frequencies up to 312.5MHz. Verify that the system power supply falls within the 2.375V to 3.465V range. Ensure the design accommodates the 32-VFQFN (5x5mm) package footprint and thermal pad requirements. Consider alternative models if higher output frequencies or different output types are needed.

Part Context

This part belongs to the FemtoClock NG series from Renesas Electronics, which focuses on low-jitter clock generation. The base product number is 8T49N004. The suffix '056NLGI8' specifies the frequency, package type, and tape & reel packaging format. Other variants in the family may offer different frequencies or output configurations.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct replacements should be verified against pin compatibility, electrical specifications, and package dimensions. Consult Renesas engineering support for qualified alternatives.