8T49N244A-999ASGI

Overview

The Renesas 8T49N244A-999ASGI is a dual-phase-locked loop (PLL) clock generator from the FemtoClock NG family. It provides two differential outputs with a maximum frequency of 644.53 MHz and supports LVDS output style. The device operates on a 2.5V supply within a -40°C to +85°C temperature range. It utilizes an I²C interface for configuration and features manual pin-based switchover modes. The component is housed in an 80-pin CABGA package.

Feature Summary

• Dual PLL architecture supporting up to 644.53 MHz output frequencies
• LVDS differential output capability with manual pin control
• I²C serial programming interface for register configuration
• Low phase jitter performance suitable for high-speed networking

Applications

• Networking equipment requiring precise clock distribution
• Telecommunications infrastructure systems
• High-speed data transmission interfaces

Procurement Notes

Verify the specific ordering suffix ASGI against current manufacturer documentation, as product configurations may have evolved since the source guide was published. Confirm end-of-life status and availability through authorized distributors, as this component series has been subject to discontinuation notifications.

Selection Notes

Select this model when a dual-PLL solution with LVDS outputs is required. Ensure the design accommodates the 80-LBGA package footprint. Verify that the 2.5V supply voltage aligns with system power rails and that I²C bus compatibility meets controller requirements.

Part Context

This part belongs to the 8T49N244I family of Universal Frequency Translators. It is designed for applications needing multiple independent clock domains derived from a single reference. The device integrates jitter attenuation and frequency synthesis capabilities within a compact form factor.

Replacement Considerations

Consult the official replacement list for updated part numbers, as Renesas timing products have transitioned to SiTime. Verify pinout and electrical parameter compatibility before substituting with other dual-PLL clock generators.