MAX6307UK44D3+

Supervisors Overview

The MAX6307UK44D3+ is a CMOS microprocessor supervisory circuit designed to monitor multiple power supplies. It features an active-low, open-drain reset output and operates within a supply voltage range of 1V to 5.5V. The device monitors two inputs with a fixed reset threshold of 4.38V and an overvoltage threshold of 4.425V. It provides a reset delay time of 157ms and consumes only 8µA of operating supply current. Packaged in a compact SOT-23-5 format, it supports industrial temperature ranges from -40°C to +85°C.

Supervisors Feature Summary

• Monitors multiple power supplies to assert system reset if any monitored supply falls outside the programmed threshold
• Designed to ignore fast transients on any monitored supply to prevent false resets
• Features low supply current consumption suitable for portable applications

Supervisors Applications

• Monitoring 5V and 3.3V supplies in personal computer systems
• Portable electronic devices requiring low power supervision
• Microprocessor system reset generation

Supervisors Procurement Notes

Verify the specific suffix D3 corresponds to the 4.38V threshold variant when sourcing. Confirm RoHS compliance status as indicated by the plus sign in the part number. Ensure the package type matches the required SOT-23-5 footprint for PCB layout compatibility. Check manufacturer documentation for lead-free specifications and storage conditions.

Supervisors Selection Notes

Select this component when dual-supervision of critical rails is required without external resistors. The fixed threshold eliminates programming complexity compared to adjustable variants. Consider the 8µA quiescent current for battery-operated designs. Verify that the open-drain output interface aligns with the target logic levels of the controlled processor or FPGA.

Supervisors Part Context

This device belongs to the MAX6305–MAX6313 family of 5-pin, multiple-input programmable reset ICs manufactured by Maxim Integrated, now part of Analog Devices Inc. The series is engineered for microprocessor supervision tasks where monitoring more than one power supply is necessary. These circuits are optimized for small form factors and low power consumption.

Supervisors Replacement Considerations

Compatible substitutes within the same family include MAX6307UK44D2-T and MAX6307EUK44D3-T, which share identical electrical characteristics and pinouts. Verify that replacement parts maintain the same 4.38V reset threshold and SOT-23-5 packaging configuration.