MAX6339HUT+T

Overview

The MAX6339HUT+T is a quad voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors four independent power supply rails using fixed thresholds of 1.58V, 2.78V, and 4.63V, alongside one adjustable threshold input. The device features an active-low open-drain reset output with a minimum timeout period of 140ms. It operates within a supply voltage range of 1V to 5.5V and consumes low quiescent current. The component is housed in a compact SOT-23-6 surface-mount package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Monitors four distinct voltage inputs simultaneously for system reliability
• Provides active-low reset signal assertion upon undervoltage detection
• Integrates an adjustable threshold channel for custom voltage monitoring
• Operates efficiently at low supply voltages with minimal power consumption

Applications

• Multi-rail power supply supervision in embedded systems
• Microprocessor and digital logic circuit protection
• Battery-powered devices requiring low-power monitoring
• Industrial control units with multiple voltage domains

Procurement Notes

Verify the specific suffix 'HUT' against official datasheets to confirm the exact threshold configuration (1.58V, 2.78V, 4.63V, Adjustable). Confirm RoHS compliance status and lead times directly with authorized distributors or Analog Devices, as availability may vary by region. Ensure the SOT-23-6 package matches your PCB footprint requirements before ordering.

Selection Notes

Select this component when simultaneous monitoring of four voltage rails is required in a space-constrained design. The inclusion of an adjustable threshold allows flexibility for non-standard voltage levels. Compare the 140ms timeout against system startup requirements to ensure adequate delay. Verify that the open-drain output interface is compatible with the downstream logic level and pull-up resistor configuration.

Part Context

This part belongs to the MAX6339P series of quad voltage supervisors designed for microprocessor applications. It replaces discrete comparator solutions by integrating precision references and timing circuits into a single small package. The series focuses on reducing bill-of-materials costs while improving reliability through factory-trimmed thresholds and guaranteed reset timing.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX6339 family with different threshold combinations. Verify if newer generations from Analog Devices offer improved accuracy or lower quiescent current. Ensure any substitute maintains the SOT-23-6 package and active-low open-drain output characteristics.