DS1811-5+T&R

Supervisors Overview

The DS1811-5+T&R is a supervisory circuit from the DS1811R series, designed as a 5V EconoReset with an open-drain output. It monitors a single input voltage and features a threshold of 4.35 V with an overvoltage detection at 4.49 V. The device operates within a supply range up to 5.5 V and maintains an accuracy of 2.5%. It includes a reset delay time of 150 ms and draws a typical operating current of 40 uA. The component functions without manual reset or watchdog timer capabilities and supports power-fail detection.

Supervisors Feature Summary

• Monitors power supply status using a precision temperature reference and comparator circuit
• Generates internal power-fail signal when out-of-tolerance conditions are detected
• Maintains reset active state for stabilization period after power returns to tolerance
• Provides open-drain output compatible with standard logic interfaces

Supervisors Applications

• Microprocessor system supervision
• Power supply monitoring in embedded systems
• Voltage threshold detection for safety circuits

Supervisors Procurement Notes

Verify exact part availability through authorized Analog Devices distributors. Confirm RoHS compliance status and manufacturing date codes. Ensure packaging matches reel specifications for surface-mount assembly processes. Cross-reference datasheet revisions to confirm pinout and electrical characteristics match design requirements.

Supervisors Selection Notes

Select this component for applications requiring simple voltage supervision without complex timing features. Consider the 40 uA quiescent current for low-power designs. Verify that the 150 ms reset delay aligns with system startup requirements. Ensure the open-drain output configuration fits the target logic family voltage levels.

Supervisors Part Context

Part of the DS1811R series of supervisory circuits manufactured by Analog Devices/Maxim Integrated. Designed for cost-sensitive applications requiring reliable power monitoring. The + suffix indicates lead-free and RoHS compliant construction. The T&R suffix denotes tape and reel packaging for automated assembly.

Supervisors Replacement Considerations

DS1811R-10+T&R offers similar functionality with different threshold characteristics. DS1813-5/T&R provides pushbutton reset capability but uses TO-92 packaging. Verify compatibility with existing board layout and electrical specifications before substitution.