8T49N004A-066NLGI8

Overview

The Renesas 8T49N004A-066NLGI8 is a FemtoClock NG clock generator IC manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 2.375V to 3.465V and supports a maximum frequency of 245.76MHz. The device features a single circuit with a 1:4 input-to-output ratio, utilizing crystal inputs and providing differential LVDS and LVPECL outputs. Packaged in a 32-VFQFN (5x5mm) exposed pad format, it is designed for surface mount installation and functions across an operating temperature range of -40°C to 85°C.

Feature Summary

• Generates frequencies up to 245.76MHz with a 1:4 input-to-output ratio
• Supports LVDS and LVPECL output signaling types
• Operates on a 2.375V to 3.465V power supply
• Housed in a compact 32-VFQFN (5x5mm) package

Applications

• High-speed digital system clock generation
• Data communication interface timing
• Telecommunications equipment synchronization

Procurement Notes

This component is listed as discontinued by the manufacturer. Verification of availability should focus on surplus or secondary market sources rather than direct factory allocation. Confirm RoHS3 compliance status and check for any Product Change Notices regarding assembly site transitions or labeling updates prior to procurement.

Selection Notes

Select this part when a low-pin-count solution is required for generating four differential clock signals from a single crystal reference. Ensure the design accommodates the 32-VFQFN thermal pad requirements and that the target application frequency does not exceed the 245.76MHz maximum limit. Verify compatibility with LVDS/LVPECL load conditions.

Part Context

The 8T49N004A belongs to the FemtoClock NG series, which utilizes fourth-generation PLL technology for jitter attenuation. This specific model represents a fixed-frequency variant within the broader 8T49N004 family, distinguished by its ordering suffix which defines the specific output configuration and packaging details.

Replacement Considerations

As the part is discontinued, verify if other members of the 8T49N004 family or the 8T49N2xx series offer compatible pinouts and electrical specifications. Cross-reference datasheets to ensure equivalent output drive strength and jitter performance metrics before substituting.