MAX6314US31D2-T

Supervisors Overview

The MAX6314US31D2-T is a low-power CMOS microprocessor supervisory circuit designed to monitor power supplies in digital systems. It features a single channel with a fixed reset threshold voltage of 3.1V. The device provides an active-low, bidirectional RESET output compatible with processors like the 68HC11. It includes a debounced manual reset input and offers a typical reset timeout period of 200ms. The component operates within a supply voltage range of 1.2V to 5.5V and is available in a compact SOT-143-4 surface-mount package.

Supervisors Feature Summary

• Bidirectional RESET output enables direct connection to microprocessors with bidirectional reset inputs, such as the 68HC11 family.
• Integrated debounced manual reset input allows for user-initiated system resets without external components.
• Low-power CMOS construction ensures minimal current consumption during operation.
• Fixed threshold voltage eliminates the need for external resistor adjustments or trimming.

Supervisors Applications

• Microprocessor (µP) power supply monitoring
• Digital system voltage supervision
• Battery-powered equipment reset circuits

Supervisors Procurement Notes

Verify the specific suffix D2 indicates the 3.1V threshold variant when sourcing. Confirm RoHS compliance status as legacy Maxim parts may have varying environmental declarations. Check for obsolescence notices from Analog Devices, as this series has been superseded by newer generations. Ensure the SOT-143-4 footprint matches your PCB design constraints before finalizing procurement orders.

Supervisors Selection Notes

Select this part when a bidirectional interface is required for legacy microcontrollers like the 68HC11. Choose the US31 suffix specifically for applications requiring a 3.1V trip point. Consider newer ADI supervisors if higher precision or additional features like watchdog timers are needed. Verify that the 200ms timeout meets the startup requirements of the target processor.

Supervisors Part Context

The MAX6314 belongs to the Maxim Integrated line of µP reset circuits, now managed by Analog Devices. This series focuses on providing reliable power supervision with minimal external component count. The US31 variant specifically targets 3.3V logic systems requiring a 3.1V detection level. It represents a mature technology solution for standard voltage monitoring tasks.

Supervisors Replacement Considerations

Publicly confirmed substitutes include other MAX6314 variants with different thresholds (e.g., MAX6314US33D1-T for 3.3V). Direct pin-compatible replacements from newer ADI families should be verified against electrical specifications. No exact cross-brand equivalents are listed in public documentation.