MAX6306UK25D3

Supervisors Overview

The MAX6306UK25D3 is a 5-pin, multiple-input programmable reset integrated circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It functions as a voltage supervisory circuit designed to monitor more than one power supply, making it suitable for applications requiring dual-rail oversight such as personal computer systems monitoring both 5V and 3.3V lines. The device asserts a system reset if any monitored supply falls outside its programmed threshold. Key electrical parameters include a maximum supply voltage of 5.5 V, a typical operating supply current of 8 µA, and a reset delay time of 1.4 ms. The specific UK25 suffix indicates a factory-programmed overvoltage threshold of 2.538 V. It features an active low, open-drain output and supports manual reset input.

Supervisors Feature Summary

• Monitors multiple power supplies simultaneously to ensure system integrity across different voltage rails.
• Features a small SOT-23-5 package and low supply current, ideal for portable and space-constrained applications.
• Designed to ignore fast transients on monitored supplies to prevent false reset assertions.

Supervisors Applications

• Monitoring dual power supplies in personal computer systems.
• Portable electronic devices requiring efficient power supervision.
• Systems needing manual reset capability alongside automatic voltage monitoring.

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead times with suppliers, as availability may be limited. Ensure the specific suffix matches the required threshold voltage for your design. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Supervisors Selection Notes

Select this part when multi-supervision of distinct voltage rails is required within a compact footprint. Compare against single-input supervisors if only one rail needs monitoring. Consider the fixed factory-programmed threshold versus adjustable options if flexibility is needed. Verify that the 1.4 ms reset delay meets the timing requirements of the target microprocessor or logic circuits.

Supervisors Part Context

This component belongs to the MAX6305–MAX6313 series of CMOS microprocessor supervisory circuits. These devices are specifically engineered for high reliability in monitoring critical power rails. The series offers various threshold voltages from 2.5V to 5.0V in 100mV increments, allowing precise selection for different standard voltage levels without external resistors.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Analog Devices resources for cross-reference data or updated product line recommendations if this specific variant is discontinued.