8T49N524-004NLGI

Overview

The 8T49N524-004NLGI is a Universal Frequency Translator manufactured by Renesas Electronics Corporation. It integrates three fully independent Phase-Locked Loops (PLLs) to support complex timing architectures. The device accepts multiple input clock formats and generates up to twelve output clocks with frequencies ranging from 8 kHz to 1.3 GHz. It features low RMS phase jitter performance, typically 333 fs in synthesizer mode, and supports LVPECL, LVDS, HCSL, and LVCMOS output levels. Configuration is managed via an I²C serial interface or external EEPROM.

Feature Summary

• Integrates three fully independent PLLs for flexible frequency translation and synthesis
• Generates up to 12 output clocks with frequencies up to 1.3 GHz
• Supports multiple input types including LVPECL, LVDS, LVHSTL, and HCSL
• Configurable output drivers: LVPECL, LVDS, HCSL, or LVCMOS
• Low RMS phase jitter: 333 fs (typical) in Synthesizer mode

Applications

• SONET/SDH network line cards
• Carrier Ethernet switches
• OTN (Optical Transport Network) equipment
• Wireless base station baseband units
• Test and measurement instruments

Procurement Notes

Verify the specific suffix '004' against official Renesas documentation to confirm factory-programmed register settings, as this defines the pre-configured frequency ratios. Confirm package availability and lead times through authorized distributors, noting that inventory levels fluctuate based on production cycles.

Selection Notes

Select the 8T49N524 when three independent PLL domains are required to drive distinct clocking needs within a single system. Ensure the application requires output frequencies up to 1.3 GHz and compatible voltage levels. Compare against the 8T49N366I if fewer than three PLLs are sufficient, or the 8T49N242 for simpler four-output configurations.

Part Context

This component belongs to the FemtoClock NG Universal Frequency Translator family. These devices are designed to replace discrete clock generators and buffers, reducing board space and power consumption while providing precise jitter attenuation and frequency synthesis capabilities for high-speed digital interfaces.

Replacement Considerations

Direct pin-to-pin replacements may not exist due to varying PLL counts and output configurations. Evaluate the 8T49N366I for applications requiring three PLLs but fewer outputs, or the 8T49N242 for lower complexity designs. Verify electrical compatibility and register programming requirements before substitution.