8T49N004A-999NLGI

Overview

The 8T49N004A-999NLGI is a FemtoClock NG clock generator manufactured by Renesas Electronics Corporation. It features one circuit with a maximum frequency of 300MHz and a 1:4 input-to-output ratio. The device accepts HCSL, LVDS, or LVPECL inputs and provides four differential LVPECL outputs. It operates on a supply voltage of 2.375V to 3.465V within an industrial temperature range of -40°C to 85°C. The component is housed in a 32-VFQFN package with an exposed pad.

Feature Summary

• Supports HCSL, LVDS, and LVPECL input formats
• Generates four differential LVPECL output clocks
• Integrated PLL with bypass capability
• Available in a compact 32-VFQFN (5x5) surface-mount package

Applications

• High-speed data communication systems
• Telecommunications infrastructure equipment
• Test and measurement instruments

Procurement Notes

This specific part number is listed as discontinued by the manufacturer. Verification of availability should focus on surplus distributors or alternative stock sources rather than direct manufacturing orders. Confirm RoHS3 compliance and MSL level 3 handling requirements during acquisition.

Selection Notes

Select this component when a 300MHz LVPECL clock distribution solution is required with HCSL/LVDS/LVPECL input flexibility. Ensure the design accommodates the 32-VFQFN thermal pad for adequate heat dissipation. Verify that the 2.375V to 3.465V supply range aligns with the system power architecture.

Part Context

The 8T49N004A belongs to the FemtoClock NG family, designed for low-jitter clock generation. The base model 8T49N004 supports various output configurations, while the 'A' suffix typically denotes specific silicon revisions or feature sets. The '999' suffix often indicates a default configuration or boot mode setting within the product line.

Replacement Considerations

As the part is discontinued, evaluate compatible alternatives within the same FemtoClock NG series or newer generations from Renesas. Cross-reference pinouts and electrical specifications to ensure compatibility with existing PCB layouts and timing requirements.