DS1811R-5/T&R

Supervisors Overview

The DS1811R-5/T&R is a voltage monitor circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand, designed for supervisory applications in electronic systems. This component operates within a supply voltage range of up to 5.5 V and features a fixed threshold voltage of 4.35 V with an accuracy of 2.5%. It provides an active low, open-drain output signal triggered by power-fail detection, incorporating a reset delay time of 150 ms to ensure system stabilization. The device supports single-input monitoring without manual reset or watchdog timer functionality, consuming a typical operating current of 40 uA. It is housed in a compact SOT-23-3 surface-mount package and functions reliably across an industrial temperature range from -40 C to +85 C.

Supervisors Feature Summary

• Provides precise power-fail detection with an open-drain output for reliable system supervision
• Features a fixed threshold voltage with high accuracy for consistent monitoring performance
• Includes a built-in reset delay to allow adequate time for power supply and processor stabilization

Supervisors Applications

• Microprocessor system reset circuits
• Power supply monitoring in embedded systems
• Battery backup switching supervision

Supervisors Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical characteristics and package type. Ensure compatibility with the target application's voltage requirements and thermal conditions. Cross-reference the part number with authorized distributors to confirm availability and authenticity. Check for any regional sales restrictions or compliance certifications required for the intended market.

Supervisors Selection Notes

Select this component when a simple, low-power voltage supervisor with an open-drain output is required. Consider the fixed threshold voltage and reset delay time relative to the system's power-up sequence. Evaluate the operating current consumption against battery life requirements if applicable. Ensure the SOT-23-3 package fits the available PCB space and manufacturing capabilities.

Supervisors Part Context

This part belongs to the DS1811R series of EconoReset voltage monitors, which are designed for cost-sensitive applications requiring basic power supervision. The series typically offers various threshold voltages and output configurations to suit different system needs. The DS1811R-5 variant specifically targets 5V systems with a defined trip point.

Supervisors Replacement Considerations

Consult official Analog Devices or Maxim Integrated substitution guides for verified equivalent parts. Verify pinout compatibility and electrical parameter alignment before replacing.