MAX6309UK44D3

Supervisors Overview

The MAX6309UK44D3 is a single-input voltage supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of up to 5.5 V and features a fixed threshold voltage of 4.4 V. The device provides an active low, push-pull output and includes a manual reset input. It has a reset delay time of 1.4 ms and consumes 8 uA of operating current. The component is housed in a SOT-23-5 package and functions across a temperature range of -40 C to +85 C.

Supervisors Feature Summary

• Monitors a single power supply rail for under-voltage conditions
• Provides a manual reset capability via dedicated input pin
• Features fast transient immunity to prevent false resets

Supervisors Applications

• Personal computer system power monitoring
• Portable electronic device power management
• Microprocessor reset circuit generation

Supervisors Procurement Notes

Verify the specific suffix D3 against the official datasheet to confirm the exact threshold voltage and package variant. Confirm RoHS compliance status as indicated in the manufacturer's documentation. Check for obsolescence or limited availability status directly with authorized distributors before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a fixed 4.4 V threshold is required for single-supervision applications. Ensure the SOT-23-5 package fits the design constraints. Verify that the 8 uA quiescent current meets the system's power budget requirements. Confirm compatibility with the target logic levels for the active low push-pull output.

Supervisors Part Context

This part belongs to the MAX6305–MAX6313 family of CMOS microprocessor supervisory circuits designed to monitor multiple power supplies. These devices assert a system reset if any monitored supply falls outside the programmed threshold. They are specifically engineered to ignore fast transients on monitored supplies, making them suitable for portable applications requiring low supply current and small package sizes.

Supervisors Replacement Considerations

Consult the official datasheet for cross-reference information. Verify functional equivalence regarding threshold voltage, package type, and electrical characteristics before substitution.