MAX6855UK39D6+T

Supervisors Overview

The MAX6855UK39D6+T is a single-channel voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range up to 5.5 V and features a fixed reset threshold of 3.9 V. The device provides an active-low open-drain reset output with a minimum timeout period of 600 ms. It supports manual reset functionality and lacks a watchdog timer or battery backup switch. The component is housed in a surface-mount SOT-23-5 package and functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates voltage monitoring with manual reset input for precise power system supervision
• Delivers active-low open-drain reset signal upon undervoltage detection or manual assertion
• Ensures stable operation through factory-trimmed reset thresholds without requiring external components

Supervisors Applications

• Microprocessor power supply monitoring in embedded systems
• Battery-operated devices requiring low quiescent current supervision
• Industrial control circuits needing reliable voltage threshold detection

Supervisors Procurement Notes

Verify component authenticity through authorized distributors, as this part may be subject to limited availability or obsolescence notices. Confirm that the ordering suffix matches the required electrical specifications, particularly the 3.9 V threshold and SOT-23-5 package variant. Cross-reference the manufacturer's latest datasheet to ensure compliance with current RoHS standards and environmental regulations before finalizing procurement orders.

Supervisors Selection Notes

Select this supervisor when a fixed 3.9 V threshold is required for single-rail monitoring applications. The active-low open-drain output suits logic interfaces requiring pull-up resistors. Consider alternative models if adjustable thresholds, watchdog timers, or push-pull outputs are necessary. Ensure the 5.5 V maximum operating voltage aligns with the target system's power rail capabilities.

Supervisors Part Context

This component belongs to the MAX6855 series of nanopower microprocessor supervisory circuits. These devices combine voltage monitoring, manual reset, and optional watchdog functions in compact packages. The series targets applications demanding low current consumption and high accuracy for critical power management tasks in portable and industrial electronics.

Supervisors Replacement Considerations

MAX6855UK17D6+T, MAX6855UK29D6+T, MAX6855UK46D5+T