MAX6346UR33

Overview

The MAX6346UR33+T is a voltage supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1.6V to 5.5V and features a fixed threshold voltage of 3.3V. The device provides an active-low, push-pull reset output with a typical reset delay time of 200ms. It consumes ultra-low power, drawing only 500nA of supply current. The component is housed in a compact SOT-23-3 package and supports surface-mount installation. It functions without manual reset or watchdog timer capabilities.

Feature Summary

• Ultra-low-power consumption suitable for battery-operated systems
• Fixed threshold voltage monitoring for precise system supervision
• Active-low push-pull output stage for direct logic interfacing

Applications

• Portable electronic devices requiring low standby current
• Microprocessor reset circuits in embedded systems
• Battery-powered instrumentation and sensors

Procurement Notes

Verify the specific suffix against official datasheets to confirm threshold voltage accuracy and package type. Ensure compatibility with operating temperature ranges required for your application environment. Cross-reference manufacturer part numbers to avoid confusion with similar series components that may have different electrical characteristics or pin configurations.

Selection Notes

Select this component when a fixed 3.3V threshold is required for system voltage monitoring. Consider the ultra-low quiescent current for energy-sensitive designs. Verify that the SOT-23-3 package fits the available PCB space. Confirm that the absence of a manual reset input meets the system design requirements.

Part Context

This component belongs to the MAX6346 family of microprocessor supervisory circuits. The family offers various threshold voltages and timeout delays to accommodate different system requirements. These circuits are designed to monitor power supplies and ensure reliable system startup and operation under varying voltage conditions.

Replacement Considerations

Check for MAX6346 variants with different threshold voltages if system voltage differs. Verify equivalent packages such as SC70 for space-constrained replacements. Ensure functional compatibility regarding output type and reset delay times.