DS1231-20N

Supervisors Overview

The DS1231-20N is a supervisory circuit manufactured by Analog Devices Inc. (formerly Maxim Integrated). It functions as a power monitor with a fixed reset threshold voltage of 4.38V and a 200ms reset timeout period. The device provides open-drain or open-collector output capabilities for flexible system integration. It operates within a supply voltage range of 2.5V to 6V and supports industrial temperature ranges from -40°C to +85°C. The component is housed in an 8-pin SOIC package, designed for reliable monitoring of power supply integrity in electronic systems.

Supervisors Feature Summary

• Fixed 4.38V reset threshold voltage ensures consistent power level detection
• Configurable open-drain or open-collector output interface
• Integrated 200ms reset timeout delay for stable signal generation
• Supports wide operating supply voltage range from 2.5V to 6V

Supervisors Applications

• Embedded system power supply supervision
• Microcontroller reset circuit protection
• Industrial control board voltage monitoring
• Consumer electronics power integrity management

Supervisors Procurement Notes

Verify the manufacturer designation on the datasheet, as Analog Devices acquired Maxim Integrated; ensure the part number suffix matches the specific package variant required. Confirm that the fixed 4.38V threshold aligns with your system's logic levels. Check for RoHS compliance markings if environmental regulations apply to your manufacturing process. Ensure the open-drain configuration suits your pull-up resistor requirements.

Supervisors Selection Notes

Select this component when a fixed voltage threshold near 4.38V is required without programmable adjustment. It is suitable for designs needing a simple, low-component-count solution for power monitoring. Consider the open-drain output compatibility with your microcontroller's input specifications. Evaluate the 200ms timeout against your system's startup sequence timing requirements to prevent premature resets.

Supervisors Part Context

This device belongs to the DS123x series of supervisory circuits, which are widely used for monitoring power rails in digital systems. The '20' suffix typically denotes the specific threshold voltage version within the family. These components are standard solutions for ensuring system stability during power-up and power-down transitions in various commercial and industrial applications.

Supervisors Replacement Considerations

Check for pin-compatible alternatives such as other variants within the DS123x series with different threshold voltages if the 4.38V level is unsuitable. Verify equivalent parts from other manufacturers offering similar fixed thresholds and open-drain outputs. Ensure replacement packages match the 8-pin SOIC form factor for direct PCB substitution.

Supervisors FAQ

What is the exact reset threshold voltage for the DS1231-20N?

The DS1231-20N has a fixed reset threshold voltage of 4.38V.

Does the DS1231-20N support adjustable reset thresholds?

No, the DS1231-20N features a fixed threshold voltage and does not support external adjustment.

What type of output drive does the DS1231-20N provide?

It provides an open-drain or open-collector output, requiring an external pull-up resistor.