8T49N004A-062NLGI8

Overview

The Renesas 8T49N004A-062NLGI8 is a FemtoClock NG clock generator IC housed in a 32-VFQFN package with an exposed pad. It features one circuit with a 1:4 input-to-output ratio, accepting crystal inputs and providing differential LVDS or LVPECL outputs. The device operates on a supply voltage of 2.375V to 3.465V within a temperature range of -40°C to 85°C. Maximum output frequency specifications vary by variant; for instance, the 8T49N004A-066NLGI8 reaches 245.76MHz. The component supports PLL bypass functionality and is classified as discontinued.

Feature Summary

• Fourth-generation FemtoClock NG PLL technology
• Single circuit with 1:4 input-to-output ratio
• Differential LVDS or LVPECL output options
• Crystal input interface with PLL bypass capability

Applications

• Networking equipment requiring low jitter clock generation
• Communication systems utilizing LVDS/LVPECL signaling
• Industrial applications operating between -40°C and 85°C

Procurement Notes

This component is officially listed as discontinued by the manufacturer. Verification of availability should focus on remaining stock from authorized distributors or secondary market sources. Check Product Change Notifications (PCN) for details regarding end-of-life status and final shipment dates. Ensure compatibility with existing designs before sourcing obsolete inventory.

Selection Notes

Select this part for single-input, four-output clock distribution needs using crystal references. Verify that the specific output frequency requirement matches the datasheet limits for the exact suffix variant, as frequencies differ across the 8T49N004A family. Confirm that LVDS or LVPECL output levels meet system requirements. Consider alternative active components if long-term supply stability is critical.

Part Context

The 8T49N004A belongs to the FemtoClock NG series, designed for low phase noise applications. This specific model is part of a broader family including variants like the 8T49N004A-066NLGI8 and 8T49N008A. The series utilizes advanced PLL technology to generate precise clock signals from crystal inputs, suitable for high-speed digital interfaces.

Replacement Considerations

As the part is discontinued, direct substitutes may not be available. Review the Universal Frequency Translators page for active alternatives such as the 8T49N488I or 8T49N241/242 series. Note that timing product lines have been acquired by SiTime; consult their documentation for potential cross-references or updated support channels.