MAX6365HKA29-T

Overview

The MAX6365HKA29-T is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1.7V to 5.5V and features a fixed reset threshold voltage of 2.86V with a maximum tolerance of ±1%. The device provides an active-low, open-drain reset output with a typical reset delay time of 280ms. It supports manual reset functionality and includes battery backup switching capabilities for continuous monitoring during power transitions. The component is housed in an SOT-23-8 surface-mount package and is rated for operation across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates battery backup switching to maintain system supervision during primary power loss or transition events.
• Provides chip-enable gating functionality to control system state based on valid power conditions.
• Features a manual reset input allowing external triggering of the reset signal independent of voltage thresholds.
• Delivers an active-low open-drain reset output compatible with standard digital logic interfaces.

Applications

• Portable electronic devices requiring extended battery life through low quiescent current monitoring.
• Embedded systems utilizing battery backup circuits to preserve critical data during power interruptions.
• Microprocessor-based designs needing reliable power-on reset and brown-out protection.
• Industrial control modules operating within harsh environmental temperature ranges.

Procurement Notes

Verify the specific suffix 'HKA29' against the manufacturer's official datasheet to confirm the exact threshold voltage and package variant. Ensure compatibility with the target board's SOT-23-8 footprint and pinout configuration. Confirm that the active-low open-drain output aligns with the connected microcontroller's input requirements. Check for any recent product change notices regarding manufacturing location or material composition updates.

Selection Notes

Select this component when a fixed 2.86V threshold is required for systems powered between 1.7V and 5.5V. Prioritize this part if battery backup switching and chip-enable gating are necessary for system integrity. Consider the 15µA typical supply current for applications where power efficiency is critical. Ensure the SOT-23-8 package fits the available PCB space and thermal constraints.

Part Context

This part belongs to the MAX6365P/L/H series of low-power supervisory circuits designed for microprocessor applications. The series distinguishes itself by integrating battery backup switching and chip-enable gating, which are not always present in basic supervisor ICs. The 'H' prefix typically denotes specific threshold tolerances or package variations within the Maxim portfolio, differentiating it from the standard MAX6365 variants.

Replacement Considerations

Cross-reference with MAX6365LKA29+T for similar functionality but verify output type differences, as some variants offer push-pull outputs instead of open-drain. Ensure substitute parts support the same 2.86V threshold and battery backup switching features. Verify package compatibility and electrical specifications match the original design requirements.