DS1819BR-20/T&R

Supervisors Overview

The DS1819BR-20+T&R is a MicroMonitor supervisory circuit manufactured by Analog Devices / Maxim Integrated. It operates within a supply voltage range of 1V to 5.5V and features a single monitored input with a threshold voltage of 3.3V. The device provides active high, active low, and push-pull output types, incorporating a manual reset function and a watchdog timer. Key electrical parameters include a reset delay time of 280ms, an operating supply current of 12µA, and an overvoltage threshold of 2.7V. It supports power failure detection and lacks battery backup switching capabilities.

Supervisors Feature Summary

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

Supervisors Applications

• Voltage supervision in embedded systems
• Power management monitoring in industrial equipment
• System reset generation in consumer electronics

Supervisors Procurement Notes

Verify component authenticity through authorized channels as the part status is listed as obsolete. Confirm package integrity and RoHS compliance details prior to integration. Check specific distributor availability restrictions for your region. Ensure replacement strategies are evaluated due to end-of-life status. Validate datasheet revisions against current design requirements.

Supervisors Selection Notes

Select this component when a supervisory circuit with integrated watchdog and manual reset is required. Consider the 3.3V threshold and 12µA quiescent current for low-power designs. Evaluate the SOT-23-5 package constraints for PCB layout. Verify compatibility with the 1V to 5.5V operating voltage range. Assess the need for active high/low outputs against system logic levels.

Supervisors Part Context

This component belongs to the DS1819BR series of MicroMonitor devices from Analog Devices / Maxim Integrated. These circuits are designed for comprehensive power system supervision. The series typically includes variants with different thresholds and packaging options. The DS1819BR specifically targets applications requiring robust reset generation and watchdog timing in compact form factors.

Supervisors Replacement Considerations

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