MAX6421US26

Supervisors Overview

The MAX6421US26 is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors system voltages ranging from 1.6V to 5V and asserts a reset signal when the supply voltage falls below its specific threshold of 2.625V. The device features an active-low, push-pull reset output and utilizes a capacitor-adjustable timeout delay for flexibility. It operates within a temperature range of -40°C to +125°C and is available in a 5-pin SOT-23 package.

Supervisors Feature Summary

• Monitors system voltages from 1.6V to 5V with precise threshold detection
• Features an active-low, push-pull reset output for robust drive capability
• Allows external adjustment of reset timeout period via an external capacitor
• Operates reliably across extended industrial temperature ranges

Supervisors Applications

• Microprocessor power supply monitoring
• Battery-powered portable devices
• Industrial control systems requiring voltage supervision
• Embedded systems with strict reset timing requirements

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and specific suffix variations against official datasheets before procurement. Ensure storage conditions adhere to moisture sensitivity levels specified in the manufacturing documentation to maintain device integrity.

Supervisors Selection Notes

Select this component when an active-low push-pull output is required rather than open-drain configurations found in other family members like the MAX6423. Consider the capacitor-adjustable timeout feature if flexible reset delays are necessary compared to fixed-delay alternatives. Evaluate the SOT-23-5 package size against board space constraints relative to SC-70 options.

Supervisors Part Context

This part belongs to the MAX6421-MAX6426 series of low-power supervisors designed for single-voltage monitoring applications. It shares functional similarities with the MAX6340 but offers distinct output characteristics. The series emphasizes low quiescent current consumption to extend battery life in portable electronics while maintaining accurate voltage supervision capabilities.

Supervisors Replacement Considerations

Direct substitutes include MAX6421XS26+T and MAX6421UK26+T, which share identical electrical specifications but differ in packaging formats such as SC-70 or alternative SOT variants. Verify pin compatibility and output stage configuration when considering these alternatives.