DS1836DS-20+T&R

Supervisors Overview

The DS1836DS-20+T&R is a MicroManager supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It provides precise monitoring of the VCC supply voltage and manages power switching between main and backup sources. The device operates within a temperature range of -40°C to +85°C and utilizes an 8-SOIC surface-mount package. Key electrical characteristics include a reset timeout of 350 ms, a threshold voltage accuracy of 20%, and a maximum supply voltage of 5.5V. It features a CMOS reset output for low current consumption.

Supervisors Feature Summary

• Monitors VCC voltage status and generates internal power-fail signals during out-of-tolerance conditions
• Automatically switches power supply from VCC to battery when voltage drops below specified thresholds
• Maintains reset state for a fixed duration after VCC returns to normal operating levels

Supervisors Applications

• Systems designed to operate with dual power supplies
• PIC microprocessor applications requiring orderly shutdown
• Battery-operated handheld devices needing low-power stop mode control

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation before integration. Check for obsolescence notices as this series may have limited availability. Ensure packaging specifications match production requirements. Validate datasheet revisions against current design standards.

Supervisors Selection Notes

Select this component for applications requiring integrated power management and reset supervision in a compact form factor. Consider the 20% threshold accuracy and 350ms reset delay when designing timing-critical circuits. Evaluate compatibility with 3.3V or 5V system architectures. Assess thermal performance within the specified industrial temperature range.

Supervisors Part Context

This part belongs to the DS1836 MicroManager family, which integrates voltage monitoring, power fail detection, and battery switching functions. It reduces the need for discrete components in embedded systems. The DS1836 series is commonly used in microprocessor-based designs to ensure reliable operation during power transitions.

Supervisors Replacement Considerations

Public confirmed substitute part numbers: DS1836AS-10+T&R, DS1836BS-20+T&R.