MAX6314US28D3

Supervisors Overview

The MAX6314US28D3+T is a low-power CMOS microprocessor supervisory circuit designed to monitor power supplies in µP and digital systems. It features a bidirectional RESET output compatible with inputs like the 68HC11. The device monitors a single input with a fixed threshold voltage of 2.63 V and an overvoltage threshold of 2.68 V. It includes a manual reset input and provides a reset delay time of 200 ms. Operating from a supply voltage up to 5.5 V, it consumes only 5 uA of supply current. The accuracy is specified at 1.8%, and it operates within a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Bidirectional RESET output allows direct connection to microprocessors with bidirectional reset inputs, such as the 68HC11.
• Includes a debounced manual reset input for external system control.
• Eliminates the need for external components and adjustments by integrating monitoring functions.
• Provides excellent circuit reliability through factory-set thresholds and low power consumption.

Supervisors Applications

• Microprocessor (µP) power supply monitoring
• Digital system supervision
• Systems utilizing 68HC11 or similar bidirectional reset interfaces

Supervisors Procurement Notes

Verify the specific suffix D3 corresponds to the required reset timeout period and package variant when ordering. Confirm RoHS compliance status (+T suffix indicates lead-free) against project requirements. Ensure the bidirectional output compatibility matches the target microcontroller's reset pin specifications. Check availability as distribution may vary by region.

Supervisors Selection Notes

Select this component when a bidirectional reset interface is required for direct MCU integration. Choose based on the fixed 2.63 V threshold suitability for the monitored rail. Consider the 200 ms timeout duration against system startup requirements. Evaluate the 5 uA quiescent current benefit for battery-operated applications compared to higher-current alternatives.

Supervisors Part Context

The MAX6314 belongs to the Maxim Integrated family of low-power µP reset circuits. It is part of a series offering various threshold voltages and timeout periods. The US28D3 designation specifies the 2.63 V threshold and specific package configuration within the SOT-143 form factor, distinguishing it from other variants in the MAX6314 line.

Supervisors Replacement Considerations

Check for MAX6314 variants with different threshold voltages if the 2.63 V level is unsuitable. Verify pinout compatibility with alternative SOT-143 supervisory ICs. Ensure bidirectional output support is maintained if replacing with non-bidirectional parts.

Supervisors FAQ

What is the function of the bidirectional RESET output?

The bidirectional RESET output allows the MAX6314 to be directly connected to microprocessors that feature bidirectional reset inputs, such as the 68HC11, simplifying interface design.

Does the MAX6314 include a watchdog timer?

No, the MAX6314 does not include a watchdog timer; it functions solely as a voltage supervisor with a manual reset input.