8T49N222B-100NLGI

Overview

The 8T49N222B-100NLGI is a FemtoClock NG Universal Frequency Translator (UFT) clock generator manufactured by Renesas Electronics. It operates within a supply voltage range of 2.375V to 3.465V and supports a maximum output frequency of 1GHz. The device features one circuit with an input-to-output ratio of 3:2, supporting differential inputs and outputs. Input formats include HCSL, LVDS, LVHSTL, and LVPECL, while the output format is LVDS. It is housed in a 48-VFQFN package with an exposed pad and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Supports integer and fractional mode PLL operation for flexible frequency synthesis
• Integrated on-chip EEPROM for non-volatile configuration storage
• Low jitter performance suitable for high-speed serial communication applications
• Supports multiple input standards including LVDS, HCSL, LVPECL, and LVHSTL

Applications

• High-speed data converters
• SerDes clock generation
• Networking equipment timing
• Telecommunications infrastructure

Procurement Notes

Verify the specific suffix '100NLGI' against official Renesas documentation to confirm pinout, packaging, and electrical characteristics match project requirements. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to PCB assembly planning. Check for any recent Product Change Notices (PCNs) that may affect material composition or manufacturing site locations.

Selection Notes

Select this component when a single-channel clock generator with a 3:2 input-to-output ratio is required. Ensure the design accommodates the 48-VFQFN package dimensions and thermal pad soldering requirements. Verify that the system power supply can maintain the 2.375V to 3.465V range under all load conditions to ensure stable PLL operation.

Part Context

This part belongs to the Renesas FemtoClock NG family, designed for low-jitter clock synthesis and distribution. The 8T49N222B variant specifically offers universal frequency translation capabilities, allowing it to function as both a jitter attenuator and a frequency synthesizer. It integrates an EEPROM to store user-defined configurations, reducing external component count.

Replacement Considerations

Consult the Renesas FemtoClock NG product selector guide for direct replacements. Consider variants such as the 8T49N222A series if different packaging or feature sets are acceptable. Verify compatibility with existing board layouts and software configuration tools before substituting.