MAX6314US28D4+T

Supervisors Overview

The MAX6314US28D4+T is a low-power CMOS microprocessor supervisory circuit designed to monitor power supplies in digital systems. It features a bidirectional active-low reset output compatible with microprocessors like the 68HC11. The device monitors a single input with a threshold voltage of 2.8V and an overvoltage threshold of 2.86V. It operates within a supply voltage range up to 5.5V, consumes 5µA of current, and provides a manual reset input. The reset delay time is 200ms, with an accuracy of 1.8%. It functions between -40°C and +85°C in an SOT-143-4 package.

Supervisors Feature Summary

• Bidirectional reset output allows direct connection to microprocessors with bidirectional reset inputs
• Manual reset input provides debounced user-initiated reset capability
• Low quiescent current consumption supports battery-powered applications

Supervisors Applications

• Microprocessor (µP) system power supply monitoring
• Digital system voltage supervision
• Systems requiring manual reset functionality

Supervisors Procurement Notes

Verify the specific suffix D4 against official Analog Devices documentation to confirm the exact threshold voltage and tolerance for this variant. Ensure the SOT-143-4 package matches the target PCB footprint. Confirm RoHS compliance status through the manufacturer's latest datasheet revision. Cross-reference the part number with authorized distributors to ensure authenticity and traceability.

Supervisors Selection Notes

Select this component when a bidirectional reset interface is required for compatibility with legacy or specific microprocessor architectures. The fixed threshold simplifies design compared to programmable alternatives. Consider the 200ms timeout period against system startup requirements. Evaluate the 5µA current draw against strict power budget constraints.

Supervisors Part Context

This part belongs to the MAX6314 series of µP reset circuits from Maxim Integrated, now part of Analog Devices. The series focuses on providing reliable power supervision with minimal external components. The US28D4 designation indicates a specific threshold voltage variant within the family, distinguished by its bidirectional output characteristic compared to open-drain variants.

Supervisors FAQ

What is the function of the bidirectional reset output?

The bidirectional output allows the MAX6314 to be directly connected to microprocessors that have bidirectional reset pins, such as the 68HC11, eliminating the need for additional level-shifting components.

Does the MAX6314US28D4+T include a watchdog timer?

No, the MAX6314 series does not include a built-in watchdog timer; it functions solely as a voltage supervisor with manual reset capability.