DS1819AR-10/T&R

Supervisors Overview

The DS1819AR-10/T&R is a MicroMonitor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single voltage input and provides reset, watchdog timer, and manual reset functions. The device operates within a supply voltage range of 1 V to 5.5 V and features a threshold accuracy of 10%. It includes an active high/low push-pull output and a reset delay time of 280 ms. The component supports a watchdog timer function and operates at a working supply current of 12 uA. It is housed in a SOT-23-5 surface-mount package and functions across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates voltage monitoring with a built-in watchdog timer for system reliability.
• Provides manual reset capability via an external pushbutton interface.
• Features configurable active high or active low push-pull outputs.

Supervisors Applications

• Embedded systems requiring power supply supervision
• Microcontroller reset circuits with watchdog functionality
• Portable devices utilizing battery backup monitoring

Supervisors Procurement Notes

Verify the exact suffix designation when ordering, as variations such as '+T&R' or '-U' may indicate different packaging or status. Confirm availability through authorized distributors, as this specific part number may be subject to limited stock or obsolescence. Ensure the selected variant matches the required voltage threshold and package type for your design.

Supervisors Selection Notes

Select this component when a single-channel voltage monitor with integrated watchdog and manual reset is required. Verify that the 10% threshold accuracy meets the system's tolerance requirements. Consider the SOT-23-5 package size constraints and the 12 uA operating current for power-sensitive applications. Ensure the input voltage range aligns with the monitored rail.

Supervisors Part Context

This component belongs to the Maxim Integrated MicroMonitor family, designed for compact supervisory applications. It combines voltage monitoring, watchdog, and reset functions into a small footprint. The series is commonly used in industrial and consumer electronics where reliable power management and system reset are critical for operation.

Supervisors Replacement Considerations

Check for direct substitutes within the DS1819 series with different suffixes (e.g., BR, CS) that may offer adjusted thresholds or packages. Verify pin compatibility and electrical specifications before substitution. Consult official replacement guides from Analog Devices for validated alternatives.

Supervisors FAQ

Does the DS1819AR-10 include a manual reset feature?

Yes, the device supports manual reset functionality, allowing the user to trigger a reset via an external pushbutton.

What is the operating supply voltage range?

The component operates with a supply voltage between 1 V and 5.5 V.