8T49N286NLGI

Overview

The 8T49N286NLGI is a universal frequency translator from the FemtoClock NG family, manufactured by Renesas Electronics. It features a single fractional-feedback PLL capable of jitter attenuation or frequency synthesis. The device supports up to eight LVPECL, LVDS, HCSL, or LVCMOS outputs, with differential frequencies reaching 1 GHz and LVCMOS up to 250 MHz. It accepts multiple input formats including LVPECL, LVDS, LVHSTL, HCSL, and crystals. Key specifications include an operating voltage range of 2.375V to 3.465V and an industrial temperature range of -40°C to +85°C.

Feature Summary

• Single fractional-feedback PLL for flexible frequency translation and jitter cleaning
• Up to 8 programmable outputs supporting LVPECL, LVDS, HCSL, and LVCMOS levels
• Maximum differential output frequency of 1 GHz
• Supports I2C programming and external EEPROM boot configurations

Applications

• SONET/SDH and Synchronous Ethernet (SyncE) network line cards
• Carrier Ethernet switches and OTN equipment
• Wireless base station baseband units
• Broadcast video infrastructure

Procurement Notes

Verify the specific ordering suffix against the official datasheet to confirm pinout, package type, and factory pre-programmed frequency settings. Ensure compatibility with the required I2C address and power supply voltages for the target design.

Selection Notes

Select this component when a single PLL solution is sufficient for generating up to eight independent clock frequencies from various input references. Consider the 8T49N286NLGI for applications requiring hitless switching between input clocks and low phase jitter performance in high-speed serial data links.

Part Context

This part belongs to the 8T49N286 series within the FemtoClock NG portfolio. It serves as a versatile clock generator and jitter cleaner, often replacing discrete oscillator solutions in complex digital systems requiring precise timing synchronization across multiple domains.

Replacement Considerations

Direct replacements may include other members of the 8T49N286 family with different suffixes for varied output counts or packages. Verify register compatibility if substituting with similar Renesas frequency translators.