DS1816-20

Supervisors Overview

The DS1816-20 is a power supply supervisor integrated circuit from the EconoReset series, manufactured by Analog Devices Inc./Maxim Integrated. It features a precision temperature-compensated voltage reference and comparator to monitor VCC status. The device provides an open-drain reset output with an internal 5k pull-up resistor. It operates within a voltage range of 2.5V to 5.5V and supports monitoring tolerances of 5%, 10%, or 20%. The component maintains reset for approximately 150ms after VCC returns to tolerance and functions across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Automatically restarts microprocessors following power failure events
• Maintains active reset state for approximately 150ms post-stabilization
• Integrates precision temperature-compensated voltage reference and sensor
• Features efficient open-drain output with internal pull-up resistor

Supervisors Applications

• Microprocessor system supervision
• Power-fail detection circuits
• Embedded system reset management
• Voltage monitoring in portable devices

Supervisors Procurement Notes

Verify the specific suffix (e.g., R, U) against the required package type (TO-92 or SOT-23). Confirm that the 20% tolerance variant aligns with the target system's voltage margin requirements. Check current availability status as distribution may be restricted. Ensure RoHS compliance documentation matches project specifications.

Supervisors Selection Notes

Select this component when a low-cost, single-channel supervisor is required for systems operating between 2.5V and 5.5V. The 20% tolerance setting is suitable for standard 3V applications. Choose based on the necessary package footprint, either through-hole TO-92 or surface-mount SOT-23, depending on board space constraints.

Supervisors Part Context

The DS1816 belongs to the EconoReset family designed to reduce discrete component counts in power management designs. It simplifies circuit architecture by combining voltage sensing and timing functions into a single small package. This series is commonly used in consumer electronics and industrial controllers requiring reliable power-up sequencing.

Supervisors Replacement Considerations

Public confirmed substitute part numbers include DS1816R-20+ and DS1816U-20+. Verify package compatibility and pinout alignment before substitution.