MAX6309UK31D3+T

Supervisors Overview

The MAX6309UK31D3+T is a CMOS microprocessor supervisory circuit designed to monitor multiple power supplies. It features a fixed reset threshold voltage of 3.08V and supports a maximum supply voltage of 5.5V. The device operates within an ambient temperature range of -40°C to +85°C and consumes 8µA of operating supply current. It provides an active low, push-pull output with a manual reset input and no watchdog timer. The component is housed in a compact SOT-23-5 package.

Supervisors Feature Summary

• Monitors multiple power supply inputs to assert system reset if any supply falls outside the programmed threshold
• Features a manual reset input for external control of the reset state
• Designed to ignore fast transients on monitored supplies to prevent false resets
• Provides an active low, push-pull output signal

Supervisors Applications

• Monitoring 5V and 3.3V power rails in personal computer systems
• Portable applications requiring low supply current consumption
• Microprocessor supervisory circuits in embedded systems

Supervisors Procurement Notes

Verify the specific suffix D3 against official Analog Devices documentation to confirm pinout and electrical characteristics match your design requirements. Confirm RoHS compliance status through the manufacturer's datasheet. Check current availability as distribution channels may vary. Ensure the SOT-23-5 package footprint aligns with your PCB layout constraints before finalizing procurement.

Supervisors Selection Notes

Select this component when monitoring multiple voltage rails is required within a single IC. The fixed 3.08V threshold suits specific logic levels. Consider the 8µA quiescent current for battery-operated designs. Verify that the push-pull output drive capability meets the load requirements of the downstream microprocessor or FPGA reset pin.

Supervisors Part Context

This part belongs to the MAX6305–MAX6313 family of 5-pin, multiple-input, programmable reset ICs manufactured by Maxim Integrated, now part of Analog Devices. These devices are engineered for portable and PC applications where space and power efficiency are critical. The family offers various factory-programmed thresholds from 2.5V to 5.0V in 100mV increments.

Supervisors Replacement Considerations

Other parts in the MAX6305–MAX6313 series offer different fixed thresholds. For example, MAX6309EUK31D3+T shares similar specifications but may differ in industrial temperature grading. Verify exact threshold voltage and package compatibility before substitution.