8T49N283C-998NLGI

Overview

The 8T49N283C-998NLGI is a FemtoClock NG Ultra-Femto Timing (UFT) clock synthesizer manufactured by Renesas Electronics. It features a single PLL circuit with one crystal input and eight differential LVPECL outputs, supporting maximum frequencies up to 1 GHz. The device operates on a 2.375V to 3.465V supply voltage within an industrial temperature range of -40°C to +85°C. Packaged in a 56-VFQFN exposed pad, it integrates an EEPROM for configuration storage.

Feature Summary

• Single PLL architecture with 1:8 input-to-output ratio
• Eight differential LVPECL output channels
• Maximum output frequency of 1 GHz
• Integrated EEPROM for non-volatile configuration

Applications

• High-speed serial communication interfaces
• Data center infrastructure timing
• Telecommunications equipment synchronization

Procurement Notes

Verify the specific suffix '998' against official Renesas documentation to confirm exact factory programming and package variant details. Confirm current production status and moisture sensitivity level requirements prior to ordering.

Selection Notes

Select this component when eight synchronized differential LVPECL clocks are required from a single crystal reference. Ensure the design supports the 56-VFQFN thermal pad soldering requirements and 2.375V–3.465V power domain constraints.

Part Context

This part belongs to the FemtoClock NG UFT family, designed for ultra-low jitter applications. It complements other variants like the 8T49N283C-999NLGI8, differing primarily in output configuration or packaging specifications as defined by the manufacturer's order guide.

Replacement Considerations

Consult the Renesas FemtoClock NG Order Guide for direct pin-compatible substitutes. Verify electrical compatibility with similar models such as the 8T49N283C-999NLGI8 before implementation.