MAX6431CHUS-T

Overview

The MAX6431CHUS-T is an ultra-low-power voltage detector and microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors system voltages to ensure reliable operation in battery-powered and portable equipment. The device features a precision bandgap reference, a comparator, and internally trimmed resistor networks that set specified trip thresholds. It includes an internal 5% threshold hysteresis circuit to prevent output chatter during power transitions. The component operates within a supply voltage range of 1.2V to 5.5V and is available in a compact 6-pin SOT-23 package.

Feature Summary

• Ultra-low quiescent current consumption for extended battery life
• Integrated microprocessor reset circuit with manual reset input option
• Precision voltage monitoring with internal hysteresis
• Compact 6-pin SOT-23 surface-mount packaging

Applications

• Battery-powered portable electronic devices
• Microprocessor system supervision
• Portable medical instruments
• Handheld communication equipment

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration when sourcing. Confirm the 'C' grade temperature rating aligns with industrial requirements. Check for RoHS compliance status as manufacturing processes evolve. Ensure the supplier provides valid traceability documentation for critical applications. Validate pinout compatibility with existing PCB layouts before finalizing procurement.

Selection Notes

Select this component when low standby current is critical for battery-operated systems requiring precise voltage monitoring. The integrated reset functionality simplifies design by reducing external component count. Consider the SOT-23 package size for space-constrained applications. Verify that the fixed threshold voltage matches the target system rail. Evaluate thermal performance if operating near maximum temperature limits.

Part Context

This part belongs to the MAX64xx family of voltage detectors and supervisory circuits designed for low-power applications. These devices are engineered to provide reliable system reset signals based on monitored supply voltages. The family offers various threshold options and package types to suit different design constraints. Maxim Integrated specializes in such power management solutions for portable electronics.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX64xx series offering similar threshold voltages. Verify that substitute components maintain equivalent quiescent current specifications. Ensure replacement parts support the required operating temperature range. Confirm package dimensions match the existing footprint to avoid mechanical interference.