MAX6865UK39D3L+T

Supervisors Overview

The MAX6865UK39D3L+T is a single-channel voltage supervisor integrated circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within an extended temperature range of -40°C to +85°C and utilizes a SOT-23-5 surface-mount package. The device features a fixed threshold voltage of 3.9V for power supply monitoring. It provides an active-high, push-pull output with manual reset capability. Key electrical parameters include a minimum reset timeout of 15ms and a maximum operating voltage of 5.5V. The component draws a typical supply current of 7µA and supports a watchdog timer function.

Supervisors Feature Summary

• Integrates a watchdog timer for system fault detection alongside voltage supervision
• Provides manual reset input functionality for controlled system recovery
• Features an active-high push-pull output driver for direct logic interfacing

Supervisors Applications

• Microprocessor (MPU) supervisory circuits requiring precise voltage tracking
• Embedded systems needing watchdog timer integration for reliability
• Portable electronics utilizing low-power voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix D3L against official documentation to confirm pinout and electrical characteristics, as variations exist within the MAX6865 family. Confirm RoHS compliance status and check for obsolescence notices, as this product line has been subject to discontinuation announcements. Ensure the source document explicitly lists the 3.9V threshold and 15ms timeout for this exact part number before procurement.

Supervisors Selection Notes

Select this component when a fixed 3.9V threshold is required for single-rail monitoring in industrial or commercial environments. The inclusion of a watchdog timer and manual reset makes it suitable for applications demanding high system availability. Compare against other MAX6865 variants if different thresholds or output polarities are needed. Ensure the SOT-23-5 footprint aligns with the PCB design constraints.

Supervisors Part Context

This part belongs to the MAX6865 series of single nPower supervisors designed for monitoring critical voltage rails. The series offers various threshold options and output configurations to suit different microprocessor architectures. Manufactured under Maxim Integrated's portfolio, now part of Analog Devices, these devices focus on compact size and low power consumption for portable and embedded applications.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Check for cross-reference data from authorized distributors or consult the manufacturer's replacement guide for discontinued items.