DS1814CR-5-U

Supervisors Overview

The DS1814CR-5-U is a MicroMonitor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a voltage range of 1V to 5.5V and features a fixed reset threshold of 4.63V. The device provides push-pull outputs for both reset and watchdog functions, ensuring reliable system monitoring. It supports active-low or active-high reset configurations and includes a programmable watchdog timer with a timeout period of 140ms minimum. Designed for surface-mount installation in SOT-23-5 packages, it functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrated watchdog timer with programmable timeout functionality
• Push-pull output drivers for reset and watchdog signals
• Configurable active-low or active-high reset polarity
• Fixed voltage threshold supervision for power management

Supervisors Applications

• Embedded system power supply monitoring
• Microcontroller reset generation
• Watchdog timer implementation in industrial controllers
• Portable electronic device power management

Supervisors Procurement Notes

Verify the specific suffix 'CR' against official datasheets to confirm temperature grade and package variant. Confirm that the 'U' designation corresponds to the standard tape-and-reel packaging format. Ensure compatibility with existing board layouts for the SOT-23-5 footprint. Cross-reference manufacturer documentation for any recent product change notices affecting this part number.

Supervisors Selection Notes

Select this component when a fixed voltage threshold is sufficient for the application requirements. It is suitable for designs requiring integrated watchdog functionality without external components. Consider the SOT-23-5 package size constraints and the operating temperature range limits. Evaluate if the fixed threshold meets the specific supply voltage monitoring needs compared to adjustable alternatives.

Supervisors Part Context

This component belongs to the MicroMonitor family of supervisory circuits designed for compact power management solutions. It integrates reset and watchdog functions into a single small-footprint package. The series is intended for applications requiring reliable system monitoring in space-constrained environments. It complements other Maxim Integrated power management devices by providing essential control logic.

Supervisors Replacement Considerations

DS1814BR-5-U: Alternative version with different temperature rating or packaging configuration.