8T49N004A-066NLGI

Overview

The Renesas 8T49N004A-066NLGI is a FemtoClock NG programmable clock generator featuring one circuit with a maximum frequency of 245.76MHz. It utilizes a crystal input and provides four LVDS or LVPECL differential outputs in a 1:4 ratio. The device operates on a single supply voltage ranging from 2.375V to 3.465V and is housed in a 32-VFQFN package with an exposed pad. Designed for low jitter applications, it supports a wide operating temperature range from -40°C to +85°C.

Feature Summary

• Programmable FemtoClock NG architecture with integrated PLL
• Single input to four differential output configuration (1:4 ratio)
• Supports LVDS and LVPECL output types
• Maximum output frequency of 245.76MHz
• 32-VFQFN (5x5mm) surface-mount package

Applications

• High-speed data communication systems requiring precise clocking
• Networking equipment such as routers and switches
• Servers and storage arrays needing low-jitter clock distribution
• Test and measurement instruments

Procurement Notes

Verify component status as the base model may be discontinued. Confirm packaging type, as the specific suffix 'I8' indicates tape-and-reel packaging while other variants may use trays. Check RoHS compliance status and moisture sensitivity level (MSL 3) prior to procurement to ensure compatibility with assembly processes.

Selection Notes

Select this model when a single crystal input must drive four differential loads at frequencies up to 245.76MHz. Ensure the design requires LVDS or LVPECL outputs rather than LVCMOS. Verify that the 32-VFQFN footprint fits the PCB layout constraints and that the 2.375V–3.465V supply range matches the system power rails.

Part Context

This part belongs to the Renesas FemtoClock NG series, designed for ultra-low jitter performance. The 8T49N004A variant specifically offers a single-input, four-output topology. The alphanumeric suffixes define output types, packaging, and programming options, distinguishing it from other members of the 8T49N004 family.

Replacement Considerations

Check for direct substitutes within the 8T49N004A series with compatible output configurations. Verify pin-to-pin compatibility if replacing with other clock generators. Consider updated revisions or alternative packages if the current version is obsolete.