DS1811-15+T&R

Supervisors Overview

The DS1811-15+T&R is a voltage monitor supervisor circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.0V to 6.0V and features a reset threshold voltage of 4.35V with an accuracy of 2.5%. The device provides an active low, open-drain output and includes a fixed reset delay time of 150ms. It functions as a single-input power fail detector without manual reset or watchdog timer capabilities. The component supports surface mount installation in a SOT-23-3 package and maintains reliable operation across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides automatic system reset when monitored voltage drops below the specified threshold
• Features an open-drain output compatible with various logic families
• Includes a fixed internal reset delay to ensure stable power-up sequencing

Supervisors Applications

• Microprocessor system power supervision
• Battery-powered equipment voltage monitoring
• Portable electronic device power management

Supervisors Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical characteristics and packaging configuration. Ensure compatibility with existing board layouts regarding the SOT-23-3 footprint and pinout assignments. Cross-reference the part number with current datasheets to validate operational parameters before integration into final designs.

Supervisors Selection Notes

Select this component for applications requiring simple, cost-effective voltage supervision without complex configuration needs. The fixed threshold and delay simplify design implementation compared to programmable alternatives. Consider the open-drain output requirement for pull-up resistor selection and logic level interfacing during the schematic capture phase.

Supervisors Part Context

This part belongs to the EconoReset series, designed for basic supervisory functions in consumer and industrial electronics. It serves as a fundamental building block for ensuring system reliability by detecting power anomalies. The series emphasizes simplicity and low cost while maintaining essential protection features for sensitive digital components.

Supervisors Replacement Considerations

Consult official substitution guides for verified equivalent parts. Verify that any alternative maintains identical threshold voltages, output types, and package dimensions to ensure direct compatibility without redesigning the host circuit.