8T49N240-030NLGI

Overview

The 8T49N240-030NLGI is a FemtoClock NG Universal Frequency Translator manufactured by Renesas Electronics Corporation. It features a single fractional-feedback PLL capable of jitter attenuation or frequency synthesis, equipped with four integer output dividers to generate up to four independent output frequencies ranging from 8kHz to 1.0GHz. The device supports LVPECL, LVDS, HCSL, and LVCMOS output levels and accepts multiple input clock types including LVPECL, LVDS, LVHSTL, and HCSL. It operates on a 10MHz to 50MHz fundamental-mode crystal and is programmable via I²C or external EEPROM.

Feature Summary

• Single fractional-feedback PLL with four integer output dividers for up to four independent output frequencies (8kHz to 1.0GHz).
• Supports LVPECL, LVDS, HCSL, and LVCMOS output voltage levels.
• Accepts multiple differential input clock formats: LVPECL, LVDS, LVHSTL, and HCSL.
• I²C register programming with support for booting configuration from external EEPROM.

Applications

• 10G/40G/100G SONET/SDH network line cards.
• Wireless base station baseband units.
• Carrier Ethernet switches and OTN equipment.
• Test and measurement applications requiring precise timing.

Procurement Notes

Verify the specific order code suffix against the manufacturer's current product status, as availability may vary. Confirm package type and temperature range specifications in the official datasheet before procurement. Ensure compatibility with system power supply requirements and I²C interface speeds.

Selection Notes

Select this component when a single PLL solution is sufficient for generating up to four distinct output frequencies from various input references. Consider the 8T49N240 family for applications requiring hitless switching between input clocks and compliance with G.8262 standards in Synchronous Ethernet environments.

Part Context

This part belongs to the 8T49N240 series of FemtoClock NG Universal Frequency Translators. It shares architectural similarities with other members like the 8T49N241 and 8T49N242 but differs in specific feature sets such as fractional divider capabilities or PLL counts. The series is designed for high-performance networking and communication systems.

Replacement Considerations

Direct replacements within the same family include the 8T49N241 and 8T49N242 series, though functional differences exist. Verify pinout compatibility and electrical parameters against the target application requirements before substitution.