MAX6309UK25D3-T

Supervisors Overview

The MAX6309UK25D3-T is a CMOS microprocessor supervisory circuit designed to monitor multiple power supplies. It operates within a supply voltage range of up to 5.5V and features a fixed reset threshold of 2.5V. The device provides an active low, push-pull output with a manual reset input and a reset delay time of 1.4ms. It consumes 8µA of operating current and functions within a temperature range of 0°C to +70°C. Packaged in a SOT-23-5 surface-mount format, it asserts a system reset if any monitored supply falls outside the programmed threshold.

Supervisors Feature Summary

• Monitors multiple power supply inputs to assert system reset when voltages exceed programmed thresholds
• Features a manual reset input for direct control of the reset state
• Provides an active low, push-pull output signal for interfacing with processor reset pins

Supervisors Applications

• Monitoring 5V and 3.3V power rails in personal computer systems
• Supervising power supplies in portable electronic devices requiring low current consumption
• Ensuring system stability by ignoring fast transients on monitored supplies

Supervisors Procurement Notes

Verify the specific suffix D3 against official Analog Devices documentation to confirm package type and temperature grade. Confirm RoHS compliance status as sourcing data varies. Check availability through authorized distributors due to potential limited stock or obsolescence indicators found in third-party listings. Ensure the part number matches the exact threshold voltage requirements for your design.

Supervisors Selection Notes

Select this component when monitoring two distinct voltage rails is required within a compact footprint. The fixed 2.5V threshold suits applications where lower voltage supervision is necessary alongside standard 3.3V or 5V lines. Consider the push-pull output capability if driving loads directly without external pull-ups. Verify that the 0°C to +70°C industrial temperature range meets your environmental specifications.

Supervisors Part Context

This part belongs to the MAX6305–MAX6313 series of 5-pin, multiple-input programmable reset ICs from Maxim Integrated. These circuits are engineered to provide reliable power supervision for microprocessors and digital systems. The series emphasizes low supply current and small package size, making them suitable for space-constrained portable applications while maintaining robust transient immunity.

Supervisors Replacement Considerations

Check the MAX6309EUK25D3+T for lead-free and RoHS-compliant alternatives within the same series. Verify pinout compatibility and electrical characteristics before substitution.