DS1231-20+

Supervisors Overview

The DS1231-20+ is a power supply supervisor circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a voltage range of 2.7V to 5.5V and features a fixed reset threshold. The device provides an open-drain or open-collector reset output with a typical response time of 20ns. It supports manual reset functionality via an external input pin. The component is available in a 16-pin SOIC package and is designed for industrial temperature ranges, ensuring reliable monitoring of power systems in embedded applications.

Supervisors Feature Summary

• Provides precise power supply supervision with a fixed reset threshold
• Features a fast 20ns response time for rapid system protection
• Includes a manual reset input pin for controlled system restarts
• Offers flexible open-drain or open-collector reset output configuration

Supervisors Applications

• Embedded microcontroller system power monitoring
• Industrial control unit voltage supervision
• Communication equipment power integrity management
• Automotive electronic subsystem reset generation

Supervisors Procurement Notes

Verify the exact suffix and tape/reel specifications when ordering, as packaging variants exist. Confirm the current lifecycle status, as older Maxim parts may be discontinued or subject to last-time buys. Ensure the selected variant matches the required package type and temperature rating for your specific design implementation.

Supervisors Selection Notes

Select this component when a dedicated power supervisor with a fixed threshold and manual reset capability is required. Consider the 20ns response time suitability for your system's noise immunity needs. Verify that the open-drain output aligns with your microcontroller's reset input requirements and pull-up resistor configuration.

Supervisors Part Context

The DS1231 belongs to Maxim Integrated's family of power supply supervisors. These devices are designed to monitor voltage rails and generate reset signals for digital logic. The series typically includes variants with different thresholds and packages, serving as critical components for ensuring system stability during power-up, power-down, and brown-out events.

Supervisors Replacement Considerations

Public confirmed substitute part numbers: DS1231S-20+T&R, DS1231S-20/T&R.