MAX6343SUT+T

Overview

The MAX6343SUT+T is a microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1.2 V to 5.5 V and features a fixed threshold voltage of 2.93 V for monitoring power rails. The device provides an active-low reset output with a minimum timeout delay of 100 ms, ensuring stable system initialization. It is housed in a compact SOT-23-6 surface-mount package and supports operation across an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Provides reliable power-on reset functionality with a fixed 2.93 V threshold
• Features an active-low open-drain or open-collector reset output
• Includes a manual reset input pin for external control
• Operates over an extended temperature range suitable for industrial applications

Applications

• Microprocessor and microcontroller power supervision
• Battery-powered portable devices requiring low standby current
• Industrial control systems operating in harsh environments
• Communication equipment requiring stable reset timing

Procurement Notes

Verify the exact suffix against official documentation, as the provided model includes a '+T' designation which may indicate tape-and-reel packaging distinct from standard bulk variants. Confirm availability status directly with authorized distributors, as this component may be subject to limited supply or obsolescence notices. Ensure the selected variant matches the required package type and temperature rating for your specific design constraints.

Selection Notes

Select this component when a fixed 2.93 V threshold is required for single-supply monitoring. The SOT-23-6 package offers space efficiency for dense PCB layouts. Consider the 100 ms minimum reset delay to accommodate slow-rising power supplies. Verify that the active-low output logic aligns with the target processor's reset input requirements before finalizing the design.

Part Context

This part belongs to the MAX6343 series of simple reset circuits designed for low-cost, high-reliability applications. It complements other Maxim Integrated supervisory products by offering a balance of precision and simplicity without complex configuration options. The series is widely used in embedded systems where deterministic reset behavior is critical for system stability.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX634x family or comparable offerings from other manufacturers. Ensure replacement parts match the 2.93 V threshold, SOT-23-6 package, and -40°C to +125°C temperature range. Verify that any substitute maintains the same reset delay characteristics and output drive capability.