MAX6467US33D3+T

Overview

The MAX6467US33D3+T is a microprocessor supervisory reset circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors single power-supply voltages ranging from +1.8V to +5.0V and asserts a reset signal if the supply voltage drops below its preset threshold of 3.3V. The device features an edge-triggered, one-shot manual reset function that ensures the microprocessor enters reset mode for a fixed timeout period only, even during continuously asserted manual resets. It operates within a temperature range of -40°C to +125°C, consumes 7µA of quiescent current, and utilizes an active low, open-drain output in an SOT-143-4 package.

Feature Summary

• Edge-triggered, one-shot manual reset function prevents indefinite reset states
• Monitors single power-supply voltages with factory-trimmed thresholds
• Active low, open-drain reset output for flexible system integration

Applications

• Microprocessor (µP) supervisory circuits
• Single power-supply monitoring systems
• Embedded systems requiring reliable manual reset handling

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to limited availability status. Confirm RoHS compliance and lead times prior to procurement as supply constraints may affect delivery schedules. Ensure packaging specifications match design requirements for surface-mount assembly processes.

Selection Notes

Select this component when a fixed 3.3V threshold is required for single-supply monitoring. Consider the SOT-143-4 package size and 7µA quiescent current for space-constrained, low-power designs. Verify compatibility with the target microprocessor's reset input requirements and operating temperature range.

Part Context

Part of the MAX6467/MAX6468 family of microprocessor supervisory circuits designed to improve system reliability compared to traditional manual reset circuits. These devices offer various factory-trimmed threshold options to accommodate different voltage levels within the 1.8V to 5.0V range.

Replacement Considerations

Check for other MAX6467 variants with different threshold voltages or packages if 3.3V is not suitable. Verify pinout compatibility before substituting with similar supervisory circuits from other manufacturers.