MAX6309UK31D3

Supervisors Overview

The MAX6309UK31D3+T is a CMOS microprocessor supervisory circuit designed to monitor multiple power supplies. It features a manual reset input and an active low, push-pull output. The device monitors two inputs with threshold voltages of 3.3 V and 5 V. It operates within a supply voltage range up to 5.5 V and has a reset delay time of 1.4 ms. The quiescent current is 8 uA. The component is housed in a SOT-23-5 package and supports an operating temperature range from -40 C to +85 C.

Supervisors Feature Summary

• Monitors multiple power supplies for system integrity
• Includes manual reset input capability
• Features active low push-pull output structure

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 exact suffix configuration against official documentation, as variations exist between leaded and lead-free versions. Confirm availability status through authorized channels, as this specific part number may be subject to limited supply or discontinuation. Ensure the selected variant matches the required thermal and regulatory specifications for the target application environment.

Supervisors Selection Notes

Select this component when dual-supervision of distinct voltage rails is required within a compact footprint. The manual reset feature provides additional control flexibility compared to fixed-reset devices. Consider the specific threshold values of 3.3 V and 5 V to ensure compatibility with standard logic levels. Verify that the SOT-23-5 package dimensions fit the PCB layout constraints.

Supervisors Part Context

This part belongs to the MAX6305–MAX6313 series of 5-pin, multiple-input, programmable reset ICs. These devices are engineered to assert a system reset if any monitored supply falls outside its programmed threshold. The series is characterized by low supply current and transient immunity, making it suitable for portable electronics and general-purpose supervisory roles.

Supervisors Replacement Considerations

Check for MAX6309UK31D3+T (lead-free) or MAX6309UK31D3-T (leaded) variants depending on RoHS requirements. Other series members like MAX6306 or MAX6310 offer similar functionality but may differ in channel count or reset thresholds.