MAX6309EUK29D3+T

Supervisors Overview

The MAX6309EUK29D3+T is a CMOS microprocessor supervisory circuit designed to monitor multiple power supplies. It operates within an input voltage range of 1.5 V to 5.5 V and features a fixed reset threshold voltage of 2.875 V. The device provides an active-low, open-drain output with a typical reset delay time of 200 ms. It consumes a low supply current of 15 µA and functions reliably across an extended temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Monitors more than one power supply and asserts a system reset if any monitored supply falls outside the programmed threshold
• Specifically designed to ignore fast transients on any monitored supply
• Features a manual reset input for user-initiated system resets

Supervisors Applications

• Monitoring dual power rails in personal computer systems
• Portable applications requiring low supply current
• Microprocessor supervisory circuits in embedded systems

Supervisors Procurement Notes

Verify the exact reset threshold voltage and package marking against the official Analog Devices datasheet before integration. Confirm RoHS compliance status and lead-free specifications. Ensure the SOT-23-5 footprint matches your PCB layout requirements. Check for obsolescence or lifecycle changes directly with the manufacturer.

Supervisors Selection Notes

Select this component when monitoring multiple voltage rails is required in space-constrained designs. The fixed threshold simplifies design compared to programmable alternatives. Consider the low quiescent current for battery-powered applications. Verify that the open-drain output configuration suits your downstream logic interface.

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 optimized for portable electronics and computer systems where monitoring multiple power sources is critical for system stability and reliability.

Supervisors Replacement Considerations

Cross-reference with other members of the MAX6305–MAX6313 series for different threshold voltages. Verify pinout compatibility with existing designs. Check for updated revisions or alternative packages offered by Analog Devices.