MAX6422US33+T

Supervisors Overview

The MAX6422US33+T is a low-power microprocessor supervisor circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors system voltages ranging from 1.6V to 5V and asserts an active-high, push-pull reset signal when the supply voltage falls below its specific threshold. This particular variant features a laser-trimmed nominal reset threshold of 3.30V. The device utilizes a capacitor-adjustable reset timeout delay for flexibility. It operates in a 4-pin SOT-143 package with a typical quiescent current of 1.6µA.

Supervisors Feature Summary

• Monitors system voltages within the 1.6V to 5V range
• Generates an active-high, push-pull reset output signal
• Features externally adjustable reset timeout via external capacitor
• Utilizes laser-trimmed internal resistors for precise threshold definition

Supervisors Applications

• Microprocessor power supply monitoring
• Battery-powered systems requiring low quiescent current
• Embedded controllers needing configurable reset delays

Supervisors Procurement Notes

Verify the exact suffix 'US33+T' to confirm the 3.30V threshold, SOT-143 package, tape-and-reel packaging, and lead-free/RoHS compliance status. Cross-reference the manufacturer part number with official Analog Devices or Maxim Integrated documentation to ensure authenticity and correct pinout configuration before procurement.

Supervisors Selection Notes

Select this component when an active-high reset output is required rather than the common active-low variant. Ensure the application voltage stays within the 1.6V to 5V operating range. The capacitor-adjustable timeout allows customization of the reset delay duration, offering design flexibility compared to fixed-delay supervisors.

Supervisors Part Context

This part belongs to the MAX642x family of low-power microprocessor supervisors. While other variants in the series offer different output polarities (active-low) or packages (SOT23-5), the MAX6422 specifically provides an active-high push-pull output. It shares the same core functionality of voltage monitoring and capacitor-adjustable timing as its siblings.

Supervisors Replacement Considerations

Compatible substitutes include other MAX6422 variants with different voltage thresholds (e.g., MAX6422US29, MAX6422US40) if the reset level differs. For active-low requirements, consider the MAX6421 or MAX6423 series. Verify package compatibility (SOT-143) and electrical specifications before substitution.