W83310G-R2 TR

Overview

The W83310G-R2 TR is a linear bus termination regulator designed for DDR SDRAM applications. It integrates power MOSFETs to provide bidirectional current sinking and driving capabilities, achieving peak currents of 2.0 Amps and continuous currents of 1.8 Amps. The device operates with +3.3V and +2.5V control power supplies. Key electrical characteristics include low output voltage offset and low external component count requirements. This integrated solution supports SSTL-2 and SSTL-3 standards, offering a cost-effective alternative to discrete termination circuits while maintaining high performance in active termination scenarios.

Feature Summary

• Integrates power MOSFETs for bidirectional driving and sinking
• Provides regulated bi-directional power capability
• Operates with standard +3.3V and +2.5V control voltages
• Features low output voltage offset for precision

Applications

• DDR Bus Termination Regulator
• Active Termination Circuits
• SSTL-2 Interface Applications
• SSTL-3 Interface Applications

Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when sourcing. Confirm the manufacturer designation as Nuvoton Technology Corporation, noting that Winbond datasheets may reference similar part numbers. Ensure the order matches the exact model number to guarantee compatibility with DDR SDRAM bus termination requirements. Check for any specific environmental or operating temperature ratings if required for the application.

Selection Notes

Select this component for DDR SDRAM designs requiring active termination with minimal external components. The integrated MOSFET design reduces board space and simplifies layout compared to discrete solutions. Consider the peak and continuous current ratings to ensure adequate drive strength for the target memory bus. Verify compatibility with the system's +3.3V or +2.5V control power domains before integration.

Part Context

This regulator belongs to a family of bus termination devices used in high-speed digital interfaces. It addresses the need for precise voltage regulation on data lines to minimize signal reflections. The integration of power stages within a small package allows for efficient thermal management and reduced parasitic effects in dense PCB layouts typical of modern computing hardware.

Replacement Considerations

Cross-reference with other bus termination regulators from Nuvoton or compatible manufacturers. Ensure substitute parts maintain identical bidirectional current capabilities and control voltage inputs. Verify that any replacement offers equivalent SSTL-2 and SSTL-3 support without altering the system's impedance matching requirements.