8T49N004A-073NLGI

Overview

The 8T49N004A-073NLGI is a FemtoClock NG programmable clock generator manufactured by Renesas Electronics. It features one PLL circuit with a 1:4 input-to-output ratio, supporting LVDS outputs and crystal inputs. The device operates within a supply voltage range of 2.375V to 3.465V and supports maximum frequencies up to 500MHz. It is housed in a 32-VFQFN exposed pad package (5x5mm) and functions reliably across an operating temperature range of -40°C to 85°C.

Feature Summary

• Supports programmable frequency generation with integrated phase-locked loop functionality
• Provides four differential LVDS output channels for low-jitter signal distribution
• Designed for compact surface-mount integration via 32-VFQFN packaging

Applications

• High-speed data communication systems requiring precise clock synthesis
• Network infrastructure equipment such as switches and routers
• ASIC and FPGA timing solutions demanding low jitter performance

Procurement Notes

This component is officially classified as obsolete and is no longer manufactured by Renesas Electronics. Procurement should focus on verifying the availability of authorized substitutes or remaining stock from certified distributors. Ensure that any replacement parts meet the original electrical specifications and pin compatibility requirements before integration into existing designs.

Selection Notes

Designers should evaluate the RC21008B000GND#BB0 as a recommended manufacturer substitute due to its similar FemtoClock architecture. Considerations must include verifying LVDS output compatibility and ensuring the replacement supports the required 500MHz maximum frequency. Thermal management and supply voltage constraints remain critical factors when transitioning to alternative components in this series.

Part Context

The 8T49N004A-073NLGI belongs to the FemtoClock NG family, known for high-performance clock generation. This specific model utilizes a single PLL to generate multiple LVDS outputs from a crystal input. It is part of Renesas' portfolio aimed at reducing jitter in high-speed digital applications, though it has reached end-of-life status.

Replacement Considerations

Renesas recommends the RC21008B000GND#BB0 as a direct substitute. Verify functional equivalence regarding LVDS outputs and frequency capabilities before adoption.