8T49N240-026NLGI8

Overview

The Renesas 8T49N240-026NLGI8 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 differential outputs and is housed in a 40-pin VFQFN package (6x6mm). Designed for high-speed data transmission, it provides precise clock generation and jitter cleaning capabilities suitable for demanding digital applications.

Feature Summary

• Ultra-low phase noise performance for high-speed serial link applications
• Integrated PLL with bypass capability for flexible clock management
• Supports multiple input formats including LVPECL, LVDS, and HCSL
• Configurable via I2C interface for customized frequency synthesis

Applications

• High-speed data communication systems
• Networking equipment requiring low-jitter clocks
• Server and storage infrastructure timing
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix '026' against official Renesas documentation to confirm exact factory programming and pinout configuration. Ensure compatibility with the 40-pin VFQFN footprint during PCB layout. Confirm RoHS3 compliance status through current datasheets as manufacturing processes may evolve. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when ultra-low jitter performance is critical for signal integrity in high-speed interfaces. Compare against standard clock generators if lower cost is prioritized over phase noise specifications. Ensure the required input/output frequency ranges align with system requirements. Consider thermal dissipation characteristics given the compact VFQFN package size and power consumption levels.

Part Context

This part belongs to the FemtoClock NG family, designed for applications requiring superior clock quality. It complements other Renesas timing solutions by offering specialized jitter attenuation capabilities. The series targets markets where signal integrity directly impacts system performance and reliability.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify electrical parameters and pin compatibility before replacing. Generic equivalents may not match the specific jitter performance characteristics.