8T49N222B-108NLGI

Overview

The 8T49N222B-108NLGI is a FemtoClock NG programmable clock generator manufactured by Renesas Electronics. It operates within a supply voltage range of 2.375V to 3.465V and supports an input frequency ratio of 3:2. The device features one circuit with differential input and output capabilities, supporting HCSL, LVDS, LVHSTL, and LVPECL input formats while providing LVDS outputs. It achieves maximum frequencies up to 1GHz and functions reliably across an operating temperature range of -40°C to 85°C. The component is housed in a 48-VFQFN package with an exposed pad.

Feature Summary

• Supports multiple input formats including HCSL, LVDS, LVHSTL, and LVPECL
• Provides LVDS differential outputs for low-jitter signal distribution
• Capable of generating frequencies up to 1GHz with a 3:2 input-to-output ratio
• Operates within a wide industrial temperature range from -40°C to 85°C

Applications

• High-speed data communication systems requiring precise clock synthesis
• Networking equipment utilizing differential signaling standards
• Industrial control systems operating in extreme temperature environments

Procurement Notes

Verify the specific suffix '108' against official Renesas documentation to confirm pinout and electrical characteristics, as suffixes often denote specific configuration or packaging variations. Ensure compatibility with the required 2.375V to 3.465V power supply rails during system design validation.

Selection Notes

Select this component when a single-channel clock generator with differential LVDS outputs is required. It is suitable for applications needing support for various input logic levels such as LVPECL or HCSL. Verify that the 48-VFQFN package footprint aligns with the PCB layout constraints and thermal management requirements.

Part Context

This part belongs to the FemtoClock NG series, designed for high-performance timing applications. It serves as a programmable solution for jitter attenuation and frequency synthesis, replacing older fixed-frequency oscillators in complex digital systems requiring flexible clock tree architectures.

Replacement Considerations

Direct replacements within the same family include other 8T49N222B variants with different suffixes, provided the electrical parameters and package dimensions remain identical. Cross-model substitution requires careful verification of input/output voltage levels and pin configurations.