8T49N287A-013NLGI

Overview

The 8T49N287A-013NLGI is an Octal Universal Frequency Translator belonging to the FemtoClock NG family. It integrates a fractional-feedback phase-locked loop for frequency translation and jitter attenuation. The device provides eight differential output channels capable of generating frequencies from 8 kHz up to 1.0 GHz using LVPECL, LVDS, or HCSL signaling formats. Configuration is managed via an I²C interface or external EEPROM, supporting programmable register settings for diverse system timing requirements.

Feature Summary

• Octal output architecture providing eight independent clock channels
• Fractional-feedback PLL enabling precise frequency translation with jitter attenuation
• Support for multiple differential output voltage standards including LVPECL, LVDS, and HCSL
• Flexible configuration options through I²C programming or bootstrapping from external EEPROM

Applications

• SONET/SDH network line cards
• Ethernet synchronization equipment
• Wireless base station baseband units
• Carrier Ethernet switches

Procurement Notes

Verify the specific suffix '013' against official Renesas documentation to confirm exact factory trim, temperature range, and packaging specifications. Confirm current production status as IDT clock products are often subject to lifecycle changes. Ensure compatibility with existing board layouts and power supply requirements before procurement.

Selection Notes

Select this component when eight synchronized differential clocks are required from a single reference source. Verify that the target application supports the necessary output voltage levels and that the I²C address configuration does not conflict with other devices on the bus. Consider thermal management capabilities based on the total number of active outputs.

Part Context

This part is manufactured by Integrated Device Technology, which was acquired by Renesas Electronics. It belongs to the FemtoClock NG series designed for high-performance networking and telecommunications timing applications. The device replaces earlier generations of universal frequency translators with enhanced jitter performance and flexible output configurations.

Replacement Considerations

Compatible substitutes within the same family include the 8T49N287A-002NLGI and 8T49N287A-998NLGI. Verify pinout and register compatibility before substitution. Other models in the 8T49N2xx series may offer similar functionality but require validation of output count and electrical characteristics.