DS1816R-20-U+

Supervisors Overview

The DS1816R-20-U+ is a fixed-threshold voltage supervisor from the EconoReset series, manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single power supply channel with a threshold voltage of 3.3V and an output tolerance of ±20%. The device features an open-drain or open-collector active-low reset output and provides a minimum reset timeout of 100ms. It operates within a supply voltage range up to 5.5V and functions across a temperature range of -40°C to +85°C in a surface-mount SOT-23-3 package.

Supervisors Feature Summary

• Provides reliable system reset generation for single-channel power supply monitoring
• Features open-drain/open-collector output compatible with various logic families
• Ensures stable operation during power-up and brown-out conditions

Supervisors Applications

• Embedded systems requiring power-on reset functionality
• Microcontroller and digital signal processor power management
• Portable electronic devices with limited power supply headroom

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and REACH material declarations prior to integration. Check current availability as the part may be subject to discontinuation or supply constraints. Ensure packaging type matches design requirements for surface-mount assembly processes.

Supervisors Selection Notes

Select this component when a fixed 3.3V threshold is required for single-supervision applications. Consider the open-drain output configuration for compatibility with pull-up resistors. Evaluate the 100ms minimum reset delay against system startup timing requirements. Verify that the SOT-23-3 package fits within the available PCB footprint constraints.

Supervisors Part Context

This device belongs to the DS1816 EconoReset family, designed for cost-sensitive applications requiring basic voltage supervision. It serves as a fundamental building block for ensuring system stability in low-power environments. The series emphasizes simplicity and reliability without complex programmable features.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications carefully if considering alternative supervisors from other manufacturers.