8T49N004A-064NLGI

Overview

The 8T49N004A-064NLGI is a programmable clock generator from the FemtoClock NG series by Renesas Electronics. It features one circuit with a maximum frequency of 312.5MHz and a 1:4 input-to-output ratio. The device operates on a supply voltage of 2.375V to 3.465V and supports HCSL, LVDS, or LVPECL inputs with LVDS outputs. It is housed in a 32-VFQFN package with an exposed pad and functions within an ambient temperature range of -40°C to 85°C.

Feature Summary

• Generates four distinct output frequencies from a single crystal or reference clock input via I2C programming.
• Utilizes fourth-generation FemtoClock NG PLL technology to maintain excellent phase noise performance.
• Supports selectable LVDS or LVPECL output levels for flexible system integration.

Applications

• High-speed data communication systems requiring precise timing signals
• Network infrastructure equipment such as routers and switches
• Test and measurement instruments needing low jitter clock sources

Procurement Notes

Verify the specific suffix '064' against official Renesas documentation to confirm the exact programmed output frequencies, as these are determined by the factory configuration. Ensure compatibility with the required crystal oscillator specifications indicated in the datasheet tables. Confirm that the 32-VFQFN package dimensions align with your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a single differential input needs to be translated into four identical or related LVDS/LVPECL outputs. It is suitable for designs requiring low jitter performance within the FemtoClock NG family. Consider alternative models like the 8T49N006I if six outputs are required instead of four. Ensure the application can accommodate the necessary I2C control interface for configuration.

Part Context

This part belongs to the FemtoClock NG family, designed for ultra-low jitter applications. It serves as a versatile clock translator and synthesizer. The device integrates a VCO operating between 1.9GHz and 2.55GHz. It is part of Renesas' broader portfolio of timing solutions acquired from IDT, maintaining compatibility with existing design ecosystems.

Replacement Considerations

Consult official substitution guides for equivalent parts within the FemtoClock NG series. Verify pinout and electrical parameter compatibility before replacing. Generic cross-references may not account for specific frequency programming differences inherent to the '064' suffix.