8T49N1012-994NLGI8

Overview

The Renesas 8T49N1012-994NLGI8 is a FemtoClock NG Universal Frequency Translator. It features one fractional-feedback PLL for jitter attenuation or frequency synthesis, with four integer output dividers generating up to four independent frequencies from 8kHz to 1.0GHz (LVPECL/LVDS/HCSL) or 250MHz (LVCMOS). The device accepts two differential inputs (LVPECL, LVDS, LVHSTL, HCSL, LVCMOS) and supports I²C programming. Key features include auto/manual input selection with hitless switching, phase-slope limiting, and compliance with Telcordia GR-253-CORE and ITU-T G.813/G.8262 standards.

Feature Summary

• Generates up to four independent output clocks ranging from 8kHz to 1.0GHz (diff.) or 250MHz (LVCMOS)
• Accepts up to two differential input clocks with support for LVPECL, LVDS, LVHSTL, HCSL, or LVCMOS levels
• Features auto and manual input clock selection with hitless switching and phase-slope limiting
• Register programmable via I²C interface

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

Part Context

This component belongs to the FemtoClock NG family of universal frequency translators. It is designed for high-performance timing applications requiring low jitter and flexible frequency translation capabilities in networking and communication infrastructure.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.