LM3704YBMM-360/NOPB

Supervisors Overview

The LM3704YBMM-360/NOPB is a microprocessor supervisory circuit manufactured by National Semiconductor, now part of Texas Instruments. It functions as a power supply supervisor with a fixed output voltage threshold of 3.6V. The device is housed in a 10-VSSOP package and features an open-drain or open-collector reset output that is active low. Designed for CMOS applications, it provides essential power management support by monitoring supply voltages and generating reset signals to ensure system reliability during power transitions.

Supervisors Feature Summary

• Provides fixed 3.6V supervision threshold for microprocessor systems
• Features open-drain or open-collector active-low reset output
• Designed for low line voltage detection and power fail indication

Supervisors Applications

• Microprocessor reset circuits
• Power supply monitoring systems
• Embedded system power management

Supervisors Procurement Notes

Verify the manufacturer origin, noting that National Semiconductor assets are held by Texas Instruments. Confirm the specific suffix /NOPB indicates lead-free compliance. Ensure the package type matches the required 10-VSSOP footprint. Cross-reference the revision history in official datasheets to confirm functional equivalence with current production versions. Validate authenticity through authorized distribution channels to avoid counterfeit components.

Supervisors Selection Notes

Select this component when a fixed 3.6V supervision threshold is required for CMOS-based microprocessor designs. The open-drain output allows flexibility in interfacing with various logic levels. Consider the 10-VSSOP package size for space-constrained PCB layouts. Verify that the active-low reset polarity aligns with the target processor's reset input requirements. Ensure the operating temperature range meets the application's environmental specifications.

Supervisors Part Context

The LM3704 series belongs to National Semiconductor's family of microprocessor supervisory circuits. These devices are designed to monitor power supplies and generate reset signals for digital systems. The LM3704 specifically offers a fixed voltage threshold option, simplifying design for applications requiring precise supervision without external resistor networks. The NOPB suffix denotes non-halogenated and lead-free construction, adhering to environmental standards.

Supervisors Replacement Considerations

Direct substitutes include other LM3704 variants with different voltage thresholds, such as LM3704XDMM-463/NOPB for 4.63V supervision. Ensure the replacement maintains the same 10-VSSOP package and open-drain output configuration. Verify that the alternative part number supports the required 3.6V threshold if exact electrical equivalence is needed. Check for pin compatibility and reset polarity alignment before substitution.