8T49N205A-009NLGI

Overview

The 8T49N205A-009NLGI is a FemtoClock NG Universal Frequency Translator manufactured by Renesas Electronics. It features a fractional-feedback PLL for frequency translation and jitter attenuation, supporting up to four independent output frequencies ranging from 8kHz to 1.0GHz (differential) or 250MHz (LVCMOS). The device accepts multiple input clock types including LVPECL, LVDS, HCSL, and LVCMOS, with auto/manual selection and hitless switching capabilities. Configuration is managed via an I2C interface or external EEPROM, ensuring compliance with SONET/SDH and SyncE standards when paired with appropriate timing sources.

Feature Summary

• Generates up to four independent output frequencies from 8kHz to 1.0GHz using a single fractional-feedback PLL.
• Supports flexible input configurations including LVPECL, LVDS, HCSL, and LVCMOS with hitless switching.
• Programmable via I2C interface or boot from external I2C EEPROM for customized frequency sets.
• Compliant with Telcordia GR-253-CORE and ITU-T G.813/G.8262 standards for network synchronization.

Applications

• 10G/40G/100G SONET/SDH and Ethernet network line cards
• Wireless base station baseband units
• Carrier Ethernet switches and OTN equipment
• GbE/10GbE/100GbE Synchronous Ethernet line card applications

Procurement Notes

Verify the specific order code suffix to confirm factory pre-programmed frequency configurations, as these are unique to each part number. Check for Product Change Notices regarding assembly site changes or material updates. Confirm RoHS3 compliance status and moisture sensitivity level prior to procurement planning.

Selection Notes

Select this component when designing systems requiring precise frequency translation with low jitter performance for high-speed serial links. Ensure the required output voltage levels (LVPECL, LVDS, HCSL, or LVCMOS) match the load requirements. Verify that the input reference clock characteristics fall within the supported range of 8kHz to 875MHz.

Part Context

This part belongs to the 8T49N205A series of FemtoClock NG Universal Frequency Translators. It is designed to replace legacy clock generators in high-performance networking and telecommunications infrastructure, offering greater flexibility through programmable I2C registers compared to fixed-function alternatives.

Replacement Considerations

Consult Renesas documentation for direct pin-to-pin compatible substitutes within the 8T49N2xx family. Verify that alternative parts support the same output count and voltage levels. Note that ordering suffixes determine specific frequency programming; generic replacements may require reconfiguration.