DS1811R-15/T&R

Supervisors Overview

The DS1811R-15+T&R is a voltage monitor supervisor circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of up to 5.5 V and features an open-drain active-low output. The device monitors a single input channel with a threshold voltage of 4.35 V and an overvoltage threshold of 4.49 V. It includes a reset delay time of 150 ms and maintains an accuracy of 2.5%. The component functions in temperatures from -40°C to +85°C, consumes 40 uA of operating current, and lacks manual reset or watchdog timer capabilities.

Supervisors Feature Summary

• Provides power-failure detection for system supervision
• Features an open-drain output compatible with various logic levels
• Designed for simple reset and power-on reset applications

Supervisors Applications

• Embedded systems requiring voltage supervision
• Microcontroller power management circuits
• Portable electronic devices with limited power budgets

Supervisors Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical characteristics and package type. Ensure compatibility with required voltage thresholds and output configurations before integration into designs.

Supervisors Selection Notes

Select this component when a low-cost, single-channel voltage monitor with open-drain output is required. Consider the 150 ms reset delay and 2.5% accuracy specifications against system timing requirements. Verify that the 4.35 V threshold aligns with the monitored rail voltage.

Supervisors Part Context

This part belongs to the EconoReset series, designed for cost-sensitive applications. It serves as a basic supervisory circuit for monitoring power rails in consumer electronics and industrial control systems where advanced features like watchdog timers are unnecessary.

Supervisors Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure replacement parts match the SOT-23-3 package and maintain equivalent threshold voltages and output types.