8T49N524-001NLGI

Overview

The 8T49N524-001NLGI is a FemtoClock NG Universal Frequency Translator manufactured by Renesas Electronics. It features a fractional-feedback PLL capable of jitter attenuation or frequency synthesis, generating up to four independent output frequencies ranging from 8kHz to 1GHz. The device supports multiple output voltage standards including LVPECL, LVDS, HCSL, and LVCMOS. It accepts up to two input clocks and includes register programmability via I2C or external EEPROM for configuration flexibility in high-speed networking applications.

Feature Summary

• Generates up to four independent output frequencies with ranges extending up to 1GHz using a fractional-feedback PLL
• Supports flexible output voltage levels including LVPECL, LVDS, HCSL, and LVCMOS
• Accepts up to two input clock sources with auto and manual selection capabilities
• Enables configuration through I2C interface or external EEPROM storage

Applications

• SONET/SDH network line cards
• Ethernet network line cards
• Wireless base station baseband units
• Carrier Ethernet switches

Procurement Notes

Verify the current product status as Renesas timing products have been acquired by SiTime. Confirm whether the specific part number remains available through Renesas channels until the transition completion date or if procurement must be directed to SiTime. Ensure compatibility with existing design configurations before finalizing orders.

Selection Notes

Select this component when designing systems requiring precise frequency translation with low jitter performance. Consider the supported output drive types and input clock requirements against system specifications. Evaluate the need for hitless switching and phase-slope limiting features for maintaining signal integrity during transitions.

Part Context

This model belongs to the FemtoClock NG family of universal frequency translators designed for high-performance timing applications. These devices are engineered to meet stringent jitter limits required by modern communication protocols. The family provides versatile solutions for generating stable clock signals across various industrial and telecommunications equipment.

Replacement Considerations

Renesas timing products are transitioning to SiTime. Verify if SiTime offers equivalent models that match the electrical specifications and pinout requirements. Consult official migration guides or technical support to ensure functional equivalence and availability during the transition period.