MAX6314US31D4+T

Supervisors Overview

The MAX6314US31D4+T is a low-power CMOS microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors power supplies in microprocessor and digital systems with a fixed threshold voltage of 3.08 V. The device features an active-low, bidirectional RESET output compatible with processors like the 68HC11. It includes a manual reset input and operates within a supply voltage range up to 5.5 V. The circuit draws 5 µA of operating current and provides a reset timeout period of 200 ms. It is available in a SOT-143-4 surface-mount package and functions across a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Bidirectional RESET output enables direct connection to microprocessors with bidirectional reset inputs, such as the 68HC11.
• Integrated debounced manual reset input allows for user-initiated system resets.
• Low-power CMOS design ensures minimal quiescent current consumption during operation.
• Fixed threshold voltage monitoring eliminates the need for external component adjustments.

Supervisors Applications

• Microprocessor (µP) power supply supervision
• Digital system voltage monitoring
• Systems requiring bidirectional reset compatibility

Supervisors Procurement Notes

Verify the specific suffix D4 against official Analog Devices documentation to confirm the exact threshold voltage and tolerance. Ensure the SOT-143-4 package matches your PCB footprint requirements. Confirm RoHS compliance status for the specific manufacturing batch if required by your assembly standards. Cross-reference the part number with the manufacturer's latest datasheet to ensure no obsolescence or pinout changes have occurred.

Supervisors Selection Notes

Select this component when a bidirectional reset interface is required for legacy or specific microprocessor architectures. The fixed 3.08 V threshold suits applications where this specific voltage level defines the valid logic state. Consider the 200 ms timeout duration to ensure it aligns with the target processor's startup time requirements. The wide operating temperature range supports industrial or automotive environments.

Supervisors Part Context

This part belongs to the MAX6314 series of supervisory circuits designed for reliable power management. Unlike open-drain variants, the bidirectional output simplifies integration with specific microcontroller families. The Maxim Integrated brand indicates its origin from the company acquired by Analog Devices, maintaining established design specifications for low-cost, high-reliability reset solutions.

Supervisors Replacement Considerations

Direct substitutes include other MAX6314 variants with different threshold voltages, such as MAX6314US37D3+T or MAX6314US33D1-T, provided the threshold voltage matches the system requirement. Ensure any replacement maintains the SOT-143-4 package and bidirectional output capability.