MAX6307UK44D3

Supervisors Overview

The MAX6307UK44D3 is a CMOS microprocessor supervisory circuit designed to monitor multiple power supplies. It features a fixed reset threshold voltage of 4.38V and supports a maximum supply voltage of 5.5V. The device operates within an extended temperature range from -40°C to +85°C. It utilizes a SOT-23-5 surface-mount package with dimensions of 2.9mm in length and 1.63mm in width. The output type is active low open drain, providing system reset assertion when monitored supplies fall outside the programmed threshold.

Supervisors Feature Summary

• Monitors more than one power supply for system integrity
• Asserts reset if any monitored supply exceeds programmed thresholds
• Designed to ignore fast transients on monitored supplies

Supervisors Applications

• Personal computer systems monitoring 5V and 3.3V rails
• Portable applications requiring low supply current
• Microprocessor supervisory circuits

Supervisors Procurement Notes

Verify the specific suffix D3 corresponds to the 4.38V threshold variant. Confirm RoHS compliance status as some variants are lead-free while others may not be. Ensure the operating temperature range matches the application requirements of -40°C to +85°C. Check for availability constraints as this component may have limited stock or restricted distribution channels.

Supervisors Selection Notes

Select this component when simultaneous monitoring of multiple voltage rails is required. The fixed 4.38V threshold suits applications where precise programmability is unnecessary. Consider the SOT-23-5 package size for space-constrained designs. Verify that the active low open-drain output interface is compatible with the target microprocessor reset input logic levels.

Supervisors Part Context

Part of the MAX6305–MAX6313 family of 5-pin multiple-input programmable reset ICs. These devices share common architectural features including low supply current consumption and transient immunity. The family targets portable and PC applications needing reliable power supervision in compact form factors.

Supervisors Replacement Considerations

Cross-reference with other MAX6307 variants differing only in threshold voltage suffixes. Verify pinout compatibility before substitution. Ensure replacement parts maintain the same SOT-23-5 package and electrical characteristics.