DS1817R-20+T&R

Supervisors Overview

The DS1817R-20+T&R is a voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.0V to 5.5V and features a fixed threshold voltage of 3.3V. The device provides a single monitored input with active high and push-pull output types. It includes manual reset functionality and a watchdog timer. The reset delay time is specified at 280 ms, and the component supports operation across a temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides voltage supervision with a fixed 3.3V threshold for system monitoring
• Integrates manual reset capability and watchdog timer functions
• Delivers active high and push-pull output signals for interface compatibility

Supervisors Applications

• Microprocessor system power monitoring
• Battery-powered device voltage supervision
• Embedded system reset management

Supervisors Procurement Notes

Verify component authenticity through authorized channels due to potential availability constraints. Confirm package integrity upon receipt as the part utilizes SOT-23-3 packaging. Ensure storage conditions align with manufacturer specifications to maintain reliability. Cross-reference datasheet revisions to confirm parameter consistency before integration into final designs.

Supervisors Selection Notes

Select this component when a fixed 3.3V threshold is required for system supervision. Consider the integrated watchdog and manual reset features for simplified design architectures. Evaluate the SOT-23-3 footprint against available board space. Verify that the operating temperature range meets the specific environmental requirements of the target application.

Supervisors Part Context

This component belongs to the DS1817 series of supervisory circuits designed for low-power applications. It serves as a compact solution for monitoring power rails in portable electronics. The series emphasizes ease of use by integrating essential reset functions into a small form factor, reducing bill-of-materials complexity for designers.

Supervisors Replacement Considerations

Consult official documentation for direct substitutes within the DS1817 family. Verify pinout compatibility and threshold voltage alignment before substitution. Check for any differences in reset delay times or current consumption characteristics.