MAX6346XR43+T

Overview

The MAX6346XR43+T is a single-channel voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors one input voltage with a fixed threshold of 4.3V and an overvoltage threshold of approximately 4.699V. The device features an active-low, push-pull output with a minimum reset timeout period of 100ms. It operates within a supply voltage range up to 5.5V and maintains a typical quiescent current of 500nA. Accuracy is specified at ±2.5% over temperature. The component is housed in a compact SC-70 (SOT-323) surface-mount package.

Feature Summary

• Provides reliable power-up sequencing for single voltage supplies via factory-set threshold detection
• Delivers active-low push-pull reset signals with configurable timeout periods starting from 100ms minimum
• Ensures high accuracy across operating temperatures through precise internal reference design

Applications

• Portable equipment requiring low-power voltage supervision
• Battery-powered systems needing efficient power management
• Microprocessor reset circuits in embedded applications

Procurement Notes

Verify the specific suffix 'R43' confirms the 4.3V threshold variant. Confirm RoHS compliance status as indicated in official documentation. Check for obsolete status or lifecycle notices from Analog Devices. Ensure the SC-70 package matches your PCB footprint requirements. Validate that the active-low output polarity aligns with your system logic levels.

Selection Notes

Select this component when a fixed 4.3V monitoring point is required for single-supply architectures. Consider the 500nA quiescent current for battery-sensitive designs. The SC-70 package offers space efficiency for dense layouts. Verify that the 100ms minimum timeout meets your microcontroller startup timing constraints. Ensure the operating temperature range covers your environmental conditions.

Part Context

This part belongs to the MAX6346 series of ultra-low-power microprocessor reset circuits. The series offers various factory-set thresholds and timeout options in small packages. The MAX6346 family is designed for applications demanding minimal standby current and precise voltage monitoring without external components.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.