MAX6368HKA26-T

Overview

The MAX6368HKA26-T is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range up to 5.5 V and features an adjustable overvoltage threshold with a fixed reset threshold of 2.63 V. The device provides an active-high, open-drain output and includes a chip-enable function for power management. It incorporates a battery backup switch and offers a typical reset delay time of 280 ms. Designed for surface-mount installation in an SOT-23-8 package, it supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates a battery backup switch to maintain system state during power transitions
• Includes a chip-enable input for controlling circuit operation and reducing current consumption
• Provides an active-high open-drain reset output compatible with various logic families

Applications

• Portable electronic devices requiring low standby current
• Battery-powered systems needing reliable power-fail detection
• Embedded controllers utilizing chip-enable gating for power optimization

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm that the 'H' series designation corresponds to the active-high output configuration required by your design. Check manufacturer documentation for RoHS compliance status and lead times, as availability may vary due to product lifecycle stages.

Selection Notes

Select this component if an active-high reset signal is required rather than the standard active-low configuration found in other variants. Ensure the 2.63 V threshold aligns with the monitored rail's minimum operating voltage. Consider the SOT-23-8 footprint constraints and verify that the 15 uA quiescent current meets the system's power budget requirements.

Part Context

This part belongs to the MAX6367/MAX6368 family of uPower supervisors. These circuits are designed for applications demanding minimal power consumption while providing essential voltage monitoring functions. The H-series specifically denotes active-high outputs, distinguishing it from L-series counterparts that offer active-low push-pull or open-drain configurations.

Replacement Considerations

The MAX6368LKA26+T serves as a functional alternative but provides an active-low output instead of active-high. Verify that the inverted logic polarity does not conflict with downstream controller inputs before substituting.