DS1818R-20+T&R

Supervisors Overview

The DS1818R-20+T&R is a single-channel power supply supervisor from the EconoReset series, manufactured by Analog Devices Inc./Maxim Integrated. It monitors one voltage input with a threshold of 2.55V and provides a low-active reset signal via an open-drain or open-collector output. The device features a minimum reset timeout of 100ms and operates within a temperature range of -40°C to +85°C (TA). Packaged in a surface-mount SOT-23-3 case, it supports simple reset and power-on reset functions.

Supervisors Feature Summary

• Provides system reset functionality for monitored power rails
• Features open-drain or open-collector output configuration
• Supports manual reset input capability

Supervisors Applications

• Embedded systems requiring power supervision
• Microcontroller-based designs needing reliable reset generation
• Industrial control equipment operating in extended temperatures

Supervisors Procurement Notes

Verify the specific suffix 'R' indicates reel packaging when ordering. Confirm the manufacturer designation matches Analog Devices Inc. or Maxim Integrated as sources may vary. Ensure the '+T&R' designation aligns with tape-and-reel requirements for automated assembly processes. Cross-reference the exact part number against current distributor catalogs to confirm availability status.

Supervisors Selection Notes

Select this component when a fixed 2.55V threshold is required for single-supply monitoring. The SOT-23-3 package suits space-constrained PCB layouts. Consider the open-drain output compatibility with external pull-up resistors. Verify that the 100ms minimum timeout meets the target system's startup timing constraints.

Supervisors Part Context

This part belongs to the DS1818 family of supervisory circuits designed for cost-sensitive applications. It serves as a fundamental building block for power management in digital electronics. The EconoReset series focuses on providing essential reset functions without complex programmability.

Supervisors Replacement Considerations

DS1818R-10+T&R offers a similar form factor but with a different threshold voltage.