8T49N006A-001NLGI8

Overview

The 8T49N006A-001NLGI8 is a programmable clock generator from the FemtoClock NG family. It features four selectable LVPECL or LVDS outputs and utilizes fourth-generation PLL technology. The device accepts differential input levels including LVPECL, LVDS, and HCSL via CLK/nCLK inputs. It operates with a VCO range of 1.9 GHz to 2.55 GHz and achieves typical RMS phase jitter of 261 fs at 156.25 MHz (12 kHz to 20 MHz). Configuration is managed through an I2C interface, supporting core voltages of 2.5V or 3.3V within an industrial temperature range.

Feature Summary

• Generates up to four distinct output frequencies from a single crystal or reference clock source using integer dividers.
• Outputs are configurable as either LVPECL or LVDS logic levels for flexible system integration.
• Incorporates fourth-generation FemtoClock NG PLL technology to maintain excellent phase noise performance.
• Supports multiple differential input signal standards including LVPECL, LVDS, and HCSL.

Applications

• PCI Express Gen 2 and Gen 3 compliant systems requiring low jitter clocking
• High-speed networking equipment and line cards
• Telecommunications infrastructure utilizing SONET/SDH standards

Procurement Notes

Verify component authenticity through authorized Renesas distributors. Confirm package integrity and lead condition upon receipt. Ensure ESD protection protocols are followed during handling. Cross-reference ordering codes with official datasheets to validate specific frequency configurations and voltage requirements before implementation.

Selection Notes

Select this model when four independent differential outputs are required with ultra-low jitter specifications. The I2C programmability allows customization of output frequencies without hardware changes. Verify that the target application supports LVPECL or LVDS signaling standards and operates within the specified 2.5V or 3.3V supply constraints.

Part Context

This component belongs to the FemtoClock NG series, designed for high-performance timing applications. It succeeds earlier generations by offering improved jitter attenuation and flexible output configurations. The part integrates advanced PLL architecture suitable for demanding digital communication interfaces requiring precise clock synchronization.

Replacement Considerations

The 8T49N004I serves as a similar alternative within the same family but provides only four outputs with potentially different factory pre-programmed configurations. Verify pin compatibility and register settings when substituting. The 8T49N008I offers eight outputs but requires validation of power consumption and board space requirements.