MAX6307UK44D3+T

Supervisors Overview

The MAX6307UK44D3+T is a CMOS microprocessor supervisory circuit designed to monitor multiple power supplies. It features a fixed reset threshold voltage of 4.38V and monitors two inputs. The device provides an active-low, open-drain reset output with a typical delay time of 1570 ms. It operates within a supply voltage range up to 5.5V and consumes low supply current. The component is housed in a compact SOT-23-5 package suitable for surface-mount applications.

Supervisors Feature Summary

• Monitors more than one power supply to assert system reset if any monitored supply falls outside the programmed threshold
• Designed to ignore fast transients on any monitored supply
• Available in a small SOT-23-5 package suitable for portable applications

Supervisors Applications

• Monitoring both 5V and 3.3V in personal computer systems
• Portable applications requiring low supply current
• Microprocessor supervisory circuits

Supervisors Procurement Notes

Verify the specific suffix D3 corresponds to the 4.38V threshold voltage configuration. Confirm RoHS compliance status (+ suffix) against project requirements. Ensure the SOT-23-5 package dimensions match the PCB footprint design. Check operating temperature range specifications for environmental compatibility.

Supervisors Selection Notes

Select this part when monitoring dual power rails such as 5V and 3.3V simultaneously. The fixed 4.38V threshold suits applications where this specific voltage level requires supervision. Consider the open-drain output type for interfacing with various logic families. Evaluate the 1570 ms delay time against system startup timing requirements.

Supervisors Part Context

This component belongs to the MAX6305–MAX6313 family of 5-pin, multiple-input, programmable reset ICs manufactured by Maxim Integrated, now part of Analog Devices Inc. These devices are specifically engineered for microprocessor supervisory roles in multi-rail power systems.

Supervisors Replacement Considerations

Other variants within the MAX6305–MAX6313 series may serve as substitutes if different reset thresholds or delay times are acceptable. Verify pinout compatibility and package size before substitution.