DS1811-5/T&R

Supervisors Overview

The DS1811-5/T&R is a voltage monitor from the EconoReset series by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.75 V to 5.25 V and features a fixed threshold voltage of 4.35 V with an accuracy of 2.5%. The device provides a reset delay time of 150 ms and includes power-fail detection capabilities. It utilizes an active low, open-drain output configuration without manual reset or watchdog timer functions. Designed for surface-mount installation in SOT-23-3 packages, it supports operating temperatures from -40°C to +85°C and consumes a typical working current of 40 uA.

Supervisors Feature Summary

• Provides reliable system supervision through a fixed threshold voltage monitor with specified accuracy.
• Features an active low open-drain output suitable for direct interfacing with digital logic inputs.
• Includes integrated power-fail detection to alert systems of voltage anomalies before a reset occurs.

Supervisors Applications

• Monitoring 5V power rails in embedded systems
• Supervising voltage levels in industrial control equipment
• Ensuring stable operation in consumer electronics

Supervisors Procurement Notes

Verify the exact suffix against official datasheets to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the SOT-23-3 package. Confirm that the open-drain output requirements match the target circuit design. Check for RoHS compliance status if required by project regulations. Validate temperature range suitability for the intended operational environment.

Supervisors Selection Notes

Select this component when a simple, low-cost supervisor for 5V systems is required. The fixed threshold eliminates the need for external resistors. Consider the open-drain output if wired-OR configurations are necessary. Evaluate the 150 ms reset delay against system startup timing requirements. Compare power consumption metrics if battery efficiency is critical.

Supervisors Part Context

This part belongs to the DS1811 series of voltage monitors. It shares the EconoReset family characteristics, focusing on simplicity and cost-effectiveness. Similar parts in the series may offer different thresholds or output types. The T&R suffix indicates tape-and-reel packaging for automated assembly.

Supervisors Replacement Considerations

Check for DS1811 variants with different thresholds or packages. Verify pinout compatibility with existing designs. Ensure electrical parameters such as reset delay and accuracy meet system specifications.