DS1231S-20

Supervisors Overview

The DS1231S-20 is a power monitor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It is housed in a 16-SOIC package and operates within a supply voltage range of 4.5V to 5.5V. The device features a fixed reset timeout delay of 20ns, ensuring rapid response to power anomalies. Designed for surface-mount installation, it supports an operating temperature range from -40°C to +85°C. The component provides open-drain or open-collector output functionality for single-channel supervision.

Supervisors Feature Summary

• Provides continuous monitoring of power supply voltage levels to detect under-voltage conditions
• Generates a reset signal with a fixed 20ns timeout delay upon power-up or fault detection
• Features open-drain or open-collector output configuration for flexible interfacing

Supervisors Applications

• Embedded system power management
• Microcontroller reset circuitry
• Industrial control systems

Supervisors Procurement Notes

Verify the manufacturer designation as Analog Devices Inc./Maxim Integrated on the component marking. Confirm the 16-SOIC package dimensions and pinout compatibility with the target PCB footprint. Ensure the supply voltage requirements align with the 4.5V to 5.5V operational range specified for this part number.

Supervisors Selection Notes

Select this component when a fixed, fast-acting power monitor is required for single-supply applications. The 20ns delay suits high-speed digital logic protection needs. Consider the 16-SOIC package for surface-mount assembly constraints. Verify thermal performance within the -40°C to +85°C industrial temperature range for the intended environment.

Supervisors Part Context

This part belongs to the DS1231 series of power monitor supervisory circuits. It is distinct from the DS1631 temperature sensor and DS1211/DS1218 NV SRAM controllers found in related listings. The suffix 'S' indicates the SOIC package variant, while '-20' specifies the 20ns delay characteristic.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.