8T49N286-001NLGI

Overview

The 8T49N286-001NLGI is a clock synthesizer and jitter cleaner belonging to the FemtoClock NG family by Renesas Electronics. It utilizes fourth-generation PLL technology to provide low RMS phase jitter performance. The device features eight selectable LVPECL or LVDS outputs, organized into banks with two channels per bank. It supports differential input levels including LVPECL, LVDS, and HCSL. The internal VCO operates within a frequency range of 1.92GHz to 2.5GHz. Configuration is managed via an I2C programming interface, allowing for flexible frequency synthesis from crystal oscillators or external reference clocks.

Feature Summary

• Fourth-generation FemtoClock NG PLL technology
• Eight selectable LVPECL or LVDS output channels
• Internal VCO range: 1.92GHz to 2.5GHz
• Supports LVPECL, LVDS, and HCSL differential inputs

Applications

• PCI Express Gen2 (5Gb/s) compliant systems
• PCI Express Gen3 (8Gb/s) compliant systems
• PCI Express 2.5Gb/s applications

Procurement Notes

Verify the specific order code suffix against the manufacturer's current datasheet to confirm factory pre-programmed frequency configurations. Ensure compatibility with required supply voltages, as the device supports full 2.5V or 3.3V operation. Confirm package type and moisture sensitivity level requirements for the assembly process.

Selection Notes

Select this component when low RMS phase jitter is critical for high-speed serial interfaces. Verify that the required output frequencies can be generated using the available internal dividers and crystal options. Check if the eight-output capacity meets system requirements, noting that banks are mux selectable from internal or external sources.

Part Context

This part is part of the 8T49N286A series, designed as a multiple frequency clock generator with fanout buffer capabilities. It serves as a timing solution for networking and communications equipment requiring precise clock distribution and jitter attenuation.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in the provided documentation.