8T49N283C-999NLGI8

Overview

The 8T49N283C-999NLGI8 is a FemtoClock NG clock generator manufactured by Renesas Electronics. It features a single PLL with an input-to-output ratio of 1:8, supporting maximum frequencies up to 1GHz. The device operates on a 2.375V to 3.465V supply and utilizes a 56-VFQFN exposed pad package (8x8mm). Outputs include LVCMOS and LVPECL configurations. It functions as a crystal-to-clock synthesizer with I2C programmability.

Feature Summary

• Single PLL architecture with 1:8 input-to-output frequency ratio
• Maximum output frequency capability of 1GHz
• Supports LVCMOS and LVPECL output voltage standards
• Operates within -40°C to +85°C ambient temperature range

Applications

• High-speed digital system clock generation
• Network infrastructure timing solutions
• Data center server board synchronization

Procurement Notes

Verify the specific suffix '8' indicates Reel packaging versus 'I' for Tray. Confirm RoHS compliance status via official datasheets. Check manufacturing lead times as they vary by production cycle. Ensure ESD handling protocols are followed due to moisture sensitivity classification.

Selection Notes

Select this component when a single differential or single-ended reference requires expansion into eight distinct output clocks. Verify that the required output voltage levels match the available LVCMOS or LVPECL options. Ensure the PCB layout accommodates the 56-VFQFN package dimensions and thermal pad requirements for adequate heat dissipation.

Part Context

This part belongs to the Renesas FemtoClock NG family, designed for low-jitter clock synthesis. It serves as a specialized timing solution within the broader 8T49N series portfolio, focusing on applications requiring precise frequency translation from a single reference source to multiple downstream components.

Replacement Considerations

Direct substitutes within the same family may include other 8T49N283 variants with different output configurations or packaging options. Cross-model replacements require careful verification of pin compatibility and electrical specifications against the original design requirements.