MAX6353UWUK+

Overview

The MAX6353UWUK+T is a dual-input voltage supervisory circuit from Analog Devices/Maxim Integrated, housed in an SOT-23-5 package. It monitors two independent supply rails with factory-set thresholds of 1.67V and 2.78V. The device features active-low push-pull reset outputs referenced to VCC1, a manual reset input, and a fixed 180ms reset delay. Operating over the -40°C to +85°C range, it draws only 20µA supply current with 1.5% accuracy. Maximum supply voltage is 5.5V.

Feature Summary

• Dual-channel voltage supervision with precision factory-set thresholds for reliable power monitoring
• Active-low push-pull reset outputs referenced to the primary supply rail
• Debounced manual reset input compatible with TTL and CMOS logic levels
• Ultra-low 20µA operating current suitable for battery-powered applications

Applications

• Monitoring multiple voltage rails in embedded microprocessor systems
• Power supply supervision in portable consumer electronics
• Industrial control systems requiring extended temperature operation
• Battery-operated devices needing low quiescent current management

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices as this part may have limited availability. Ensure ordering suffix matches required tape-and-reel packaging specifications. Cross-reference datasheet revision dates to confirm parameter consistency before integration into production designs.

Selection Notes

Select this component when dual-voltage supervision with fixed thresholds is required without external resistor networks. Consider the specific threshold values of 1.67V and 2.78V against target supply rails. Evaluate the 180ms reset delay against system startup timing requirements. Verify that the SOT-23-5 package footprint aligns with PCB layout constraints and thermal dissipation needs for the application environment.

Part Context

This device belongs to the MAX6353 series of microprocessor supervisors designed for multi-supply systems. It offers integrated monitoring capabilities replacing discrete comparator solutions. The series provides various threshold combinations within the same pinout architecture, allowing design flexibility while maintaining consistent interface characteristics across different voltage monitoring configurations.

Replacement Considerations

Compatible substitutes include MAX6353UVUK+T and MAX6353LTUK+T, which share identical pinouts and functional architectures but differ in threshold voltage selections. Verify electrical parameters match application requirements before substitution.