DS1819AR-20+T&R

Supervisors Overview

The DS1819AR-20+T&R is a supervisory circuit from the MicroMonitor series, designed for monitoring voltage levels in electronic systems. It operates within a supply voltage range of up to 5.5 V and features a threshold voltage of 3.3 V. The device includes a manual reset capability and incorporates a watchdog timer function. It provides active high, active low, and push-pull output types with a reset delay time of 280 ms. Power failure detection is supported, while battery backup switching is not included. The component functions reliably across an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer for system reliability monitoring
• Supports multiple output configurations including active high, active low, and push-pull
• Features manual reset capability for user-initiated control
• Includes power failure detection functionality

Supervisors Applications

• Voltage supervision in embedded systems
• Microcontroller reset management
• Power integrity monitoring in industrial electronics

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to discontinued status. Confirm RoHS compliance details via official documentation. Check regional availability restrictions as distribution may be limited. Ensure storage conditions meet humidity sensitivity requirements if applicable. Validate package type SOT-23-5 compatibility with PCB layout specifications before integration.

Supervisors Selection Notes

Consider the fixed 3.3 V threshold when designing circuits requiring precise voltage monitoring. Evaluate the need for watchdog functionality against system complexity. Assess whether manual reset meets operational requirements compared to automatic options. Review output drive capabilities to ensure compatibility with downstream logic levels. Verify thermal performance within the specified -40°C to +85°C range for intended environment.

Supervisors Part Context

This part belongs to the DS1819BR/AR series of supervisory circuits by Analog Devices / Maxim Integrated. It serves as a compact solution for power management tasks in space-constrained applications. The series is known for integrating essential monitoring features into small packages like SOT-23-5. Discontinued status indicates it may be replaced by newer generations in current product lines.

Supervisors Replacement Considerations

DS1819AR-5+T&R offers similar functionality with different threshold characteristics.