8T49N240-029NLGI8

Overview

The Renesas 8T49N240-029NLGI8 is a FemtoClock NG ultra-performance jitter attenuator and clock synthesizer. It operates within a supply voltage range of 2.375V to 3.465V and supports input frequencies up to 875MHz with maximum output frequencies reaching 867MHz. The device features four LVPECL outputs and utilizes a 40-pin VFQFPN (6x6mm) package with an exposed pad. Designed for high-speed digital applications, it provides precise clock generation and jitter cleaning capabilities across a commercial temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low jitter attenuation and synthesis capabilities
• Four differential LVPECL output channels
• Supports input frequencies up to 875MHz
• Integrated I2C interface for configuration

Applications

• High-speed serial communication interfaces
• Data center infrastructure equipment
• Telecommunications base stations
• Enterprise networking switches and routers

Procurement Notes

Verify the specific suffix '029' against official Renesas documentation to confirm the exact frequency plan and configuration settings. Ensure compatibility with the 40-pin VFQFPN footprint during PCB layout. Check for recent Product Change Notifications (PCNs) regarding assembly sites or material changes before finalizing procurement plans.

Selection Notes

Select this component when low phase noise and jitter cleaning are critical for system performance. Confirm that the required output frequency ratios match the internal PLL capabilities of the 8T49N240 series. Verify power supply requirements align with the 2.375V to 3.465V operating range and ensure thermal management suits the 6x6mm package constraints.

Part Context

This part belongs to the FemtoClock NG family, designed for demanding timing applications requiring superior signal integrity. The 8T49N240 series integrates multiple PLLs and VCOs to support complex clocking architectures in high-speed data transmission systems.

Replacement Considerations

Consult official Renesas cross-reference guides for verified substitutes. Consider the 8T49N241 or 8T49N242 series if pin-compatible alternatives with different feature sets are required.