MAX6314US31D4-T

Supervisors Overview

The MAX6314US31D4-T is a low-power CMOS microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 2.0V to 5.5V and features a fixed reset threshold voltage of 3.1V. The device provides a bidirectional active-low RESET output compatible with processors such as the 68HC11. Key electrical parameters include a maximum operating current of 5µA, a reset delay time of 280ms, and an overvoltage threshold of 3.17V. It functions reliably across an industrial temperature range from -40°C to +85°C and is housed in a compact SOT-143-4 surface-mount package.

Supervisors Feature Summary

• Bidirectional RESET output enables direct connection to microprocessors with bidirectional reset inputs, eliminating external components.
• Low quiescent current consumption supports extended battery life in portable electronic applications.
• Integrated manual reset input allows for user-initiated system resets without additional hardware.
• Factory-programmed reset thresholds ensure precise power monitoring without requiring external adjustments.

Supervisors Applications

• Monitoring power supplies in microprocessor-based digital systems
• Battery-powered portable devices requiring low standby current
• Systems utilizing bidirectional reset interfaces like the 68HC11

Supervisors Procurement Notes

Verify the specific suffix D4 against official datasheets to confirm the 3.1V threshold variant. Confirm RoHS compliance status for the specific manufacturing lot. Check availability as distribution channels may list limited stock or end-of-life statuses for Maxim Integrated parts. Ensure the SOT-143-4 package matches your PCB footprint requirements before ordering.

Supervisors Selection Notes

Select this component when a bidirectional reset interface is required for compatibility with legacy microprocessors. Choose this part for applications needing a fixed 3.1V threshold rather than programmable options found in other series members. Consider the 5µA current draw for strict power budget constraints. Verify that the 280ms delay meets the startup timing requirements of the target system.

Supervisors Part Context

This part belongs to the MAX6314 family of microprocessor supervisory circuits designed by Maxim Integrated. The family offers various threshold voltages and packages to suit different power rail monitoring needs. The US31 designation specifically indicates the SOT-143-4 package with a 3.1V threshold. This series is widely used in industrial and consumer electronics for reliable power management.

Supervisors Replacement Considerations

Check for MAX6314US31D4+T for lead-free compliant versions if required. Other threshold variants within the MAX6314 series share identical pinouts and functionality but differ in trip points. Verify package compatibility with SOT-143-4 footprints when considering alternative suppliers.