8T49N004A-060NLGI8

Overview

The Renesas 8T49N004A-060NLGI8 is a FemtoClock NG clock generator featuring fourth-generation PLL technology. It accepts a crystal input and generates four LVPECL outputs with a maximum frequency of 245.76MHz. The device operates on a single 2.375V to 3.465V supply and utilizes a 32-VFQFN package with an exposed pad. It supports I2C programming for register configuration and includes internal OTP memory for boot configuration.

Feature Summary

• Fourth-generation FemtoClock NG PLL technology
• Crystal input with 1:4 output ratio (LVPECL)
• Maximum output frequency of 245.76MHz
• I2C serial interface for programmability

Applications

• Networking equipment requiring low jitter clocks
• Communication systems utilizing LVPECL interfaces
• Servers and storage arrays needing precise timing

Procurement Notes

Verify the specific suffix '060' against official Renesas documentation, as public distributor listings predominantly reference the '066' variant. Confirm current lifecycle status, as related FemtoClock NG models have faced discontinuation notices. Ensure compatibility with 32-VFQFN footprint requirements during procurement planning.

Selection Notes

Select this component when a crystal input source is required to drive multiple LVPECL loads. Verify that the 245.76MHz maximum frequency meets system timing needs. Consider the 32-VFQFN package constraints for PCB layout and thermal management compared to larger BGA or QFP alternatives in the same family.

Part Context

This part belongs to the FemtoClock NG series, which integrates low-phase noise synthesizers and jitter attenuators. The 8T49N004A model specifically targets applications requiring a single crystal input to fan out differential signals. The product line has been transitioned to SiTime, affecting long-term support channels.

Replacement Considerations

Public data confirms the acquisition of Renesas timing products by SiTime. Consult SiTime.com for equivalent offerings or updated availability. No direct pin-compatible substitutes are verified in public distributor databases for this specific order code.