DS1819AR-20-U

Supervisors Overview

The DS1819AR-20-U is a MicroMonitor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1 V to 5.5 V and features a single monitored input with a threshold of 3.3 V. The device includes an integrated watchdog timer and provides active high, active low, or push-pull output configurations. It offers a reset delay time of 280 ms and maintains accuracy within 10%. Designed for surface mount installation in SOT-23-5 packages, it functions reliably across temperatures from -40°C to +85°C while consuming only 12 µA of operating current.

Supervisors Feature Summary

• Integrates power supply monitoring with a built-in watchdog timer for comprehensive system supervision
• Provides flexible output options including active high, active low, and push-pull configurations
• Supports manual reset functionality for controlled system recovery

Supervisors Applications

• Embedded systems requiring reliable voltage supervision
• Microcontroller-based designs needing watchdog protection
• Portable electronics utilizing low-power monitoring circuits

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as the part status is discontinued. Confirm package integrity and pin alignment against datasheet specifications before integration. Ensure environmental compliance requirements match project standards given the manufacturing lifecycle status.

Supervisors Selection Notes

Evaluate the specific threshold voltage requirements against the fixed 3.3 V setting. Consider the 280 ms reset delay duration relative to system startup timing needs. Assess the SOT-23-5 footprint compatibility with existing PCB layouts and thermal management constraints.

Supervisors Part Context

This component belongs to the DS1819BR/AR series of MicroMonitor supervisory circuits. It serves as a dedicated power management IC designed to monitor voltage levels and manage system resets. The series is characterized by low quiescent current and compact packaging suitable for space-constrained applications.

Supervisors Replacement Considerations

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