MAX6306UK25D3-T

Supervisors Overview

The MAX6306UK25D3-T is a CMOS microprocessor supervisory circuit designed to monitor multiple power supplies. It asserts a system reset if any monitored supply falls outside the programmed threshold, specifically suited for monitoring 5V and 3.3V rails in personal computer systems. The device features a small SOT-23-5 package and low supply current of 8µA. It includes a manual reset input and ignores fast transients on monitored supplies. Factory-set reset thresholds range from 2.5V to 5.0V, with the UK25 variant set at 2.5V.

Supervisors Feature Summary

• Monitors multiple power supply inputs simultaneously
• Immune to short voltage transients on monitored lines
• Includes manual reset input functionality
• Operates with guaranteed reset validity down to 1V

Supervisors Applications

• Personal computer systems
• Portable computers
• Multivoltage systems (e.g., 3V/5V, 5V/12V)
• Embedded control systems

Supervisors Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration when sourcing. Confirm RoHS compliance status as '+T' variants typically denote lead-free construction. Check manufacturer lifecycle status for availability constraints. Ensure the 2.5V threshold matches system requirements. Validate pinout compatibility with existing SOT-23-5 footprints.

Supervisors Selection Notes

Select this component for applications requiring simultaneous monitoring of two distinct voltage rails within a compact footprint. The fixed 2.5V threshold suits lower-voltage logic monitoring. Consider the 8µA quiescent current for battery-powered designs. Verify that the open-drain output type aligns with the target system's pull-up requirements. Ensure the manual reset feature meets safety interlock needs.

Supervisors Part Context

Part of the MAX6305–MAX6313 family of 5-pin, multiple-input programmable reset ICs. Designed by Maxim Integrated, now part of Analog Devices Inc. These devices are optimized for portable and industrial applications where space and power consumption are critical constraints. The series provides factory-programmed thresholds without external components.

Supervisors Replacement Considerations

Cross-reference with other MAX6306 variants having different threshold voltages if the 2.5V setting is unsuitable. Verify functional compatibility with MAX6305 or MAX6307 series parts sharing the SOT-23-5 package. Ensure substitute parts maintain the same manual reset input and transient immunity characteristics.