DS1238-5+

Supervisors Overview

The DS1238-5+ is a voltage supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 4.5 V to 5.5 V with a threshold voltage of 5 V. The device features a reset delay time of 150 ms and monitors one input. Output types include active high, active low, open drain, and push-pull configurations. It includes manual reset capability, a watchdog timer, and battery backup switching. Power failure detection is supported. The component works at a maximum supply current of 4 mA and functions between 0°C and +70°C. Overvoltage and undervoltage thresholds are specified at 4.5 V and 4.25 V respectively.

Supervisors Feature Summary

• Integrates power-fail detection and battery backup switching for continuous system monitoring
• Includes a programmable watchdog timer to prevent software lockups
• Provides multiple output drive configurations including push-pull and open drain

Supervisors Applications

• Embedded systems requiring reliable power supervision
• Microprocessor-based designs needing watchdog functionality
• Battery-powered equipment with backup switching requirements

Supervisors Procurement Notes

Verify the exact suffix against official datasheets as distribution listings may vary. Confirm package type and temperature grade match design requirements. Check lifecycle status as this series may be discontinued or subject to last-time buy restrictions. Ensure pinout compatibility if replacing existing components on a PCB layout.

Supervisors Selection Notes

Select based on required reset delay and output configuration needs. Consider the operating temperature range for environmental suitability. Verify that the monitored voltage level aligns with the system's nominal supply. Evaluate the necessity of integrated watchdog and battery backup features versus discrete solutions.

Supervisors Part Context

This component belongs to the DS1238A series of supervisory circuits from Maxim Integrated. These devices are designed to monitor power supplies in microprocessor systems. The series typically combines voltage monitoring with nonvolatile memory management capabilities in a single package.

Supervisors Replacement Considerations

• DS1238A-5