DS1818-20

Supervisors Overview

The DS1818-20 is a voltage supervisor integrated circuit from the EconoReset series, manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single voltage channel 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. It is housed in a TO-92-3 through-hole package.

Supervisors Feature Summary

• Provides simple reset or power-on reset functionality for monitored circuits
• Features an open-drain or open-collector output interface for flexible system integration
• Includes a guaranteed minimum reset timeout period to ensure stable power-up sequences

Supervisors Applications

• Embedded systems requiring reliable power supervision
• Microcontroller-based designs needing automatic reset on voltage drop
• Industrial control units operating in varying thermal environments

Supervisors Procurement Notes

Verify the specific suffix and packaging configuration when ordering, as availability may vary between bulk tape-and-reel and individual unit formats. Confirm that the manufacturer designation matches current Analog Devices or Maxim Integrated sourcing channels. Ensure the component meets RoHS compliance requirements for your assembly process. Check for any obsolescence notices or lifecycle status updates before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a single-channel voltage monitor with a fixed 2.55V threshold is required. The TO-92-3 package is suitable for through-hole mounting applications where surface space is limited but leaded connections are preferred. Consider the open-drain output capability if interfacing with logic families requiring level shifting or wired-OR configurations.

Supervisors Part Context

This part belongs to the DS1818 family of voltage supervisors designed for cost-sensitive applications. It shares functional similarities with other EconoReset devices but differs in threshold voltage and package type. The DS1818R variants offer surface-mount options, while this version targets through-hole PCB layouts.

Supervisors Replacement Considerations

DS1818R-20+T&R serves as a surface-mount equivalent within the same product family.