DS1813R-5/T&R

Supervisors Overview

The DS1813R-5/T&R is a MicroMonitor supervisory circuit manufactured by Maxim Integrated, now part of Analog Devices Inc. It operates as a fixed single-channel power supply management device housed in a five-pin SOT-23 package (PDSO5). The component provides system reset functionality with a specified threshold voltage of +4.5V. Designed for CMOS applications, it monitors supply rails to ensure reliable operation in embedded systems requiring precise voltage supervision.

Supervisors Feature Summary

• Provides hardware-based system reset generation upon detection of out-of-specification supply voltages
• Integrates watchdog timer capabilities to detect and recover from software execution failures
• Utilizes a compact surface-mount SOT-23-5 package for efficient PCB space utilization

Supervisors Applications

• Embedded controller power supply monitoring
• Microprocessor system reset generation
• Industrial equipment voltage supervision

Supervisors Procurement Notes

Verify the manufacturer designation on the datasheet, as Maxim Integrated products are now distributed under the Analog Devices brand. Confirm that the suffix /T&R indicates tape-and-reel packaging if specific handling requirements apply. Ensure the voltage rating matches the target application's rail specifications before procurement.

Supervisors Selection Notes

Select this component when a fixed 4.5V reset threshold is required for CMOS logic families. The SOT-23-5 form factor is suitable for space-constrained designs. Verify compatibility with the system's operating voltage range and ensure the push-pull output configuration meets the load requirements of the connected microcontroller or processor reset pin.

Supervisors Part Context

This device belongs to the DS1813 MicroMonitor family, which specializes in supervisory circuits for digital systems. These components are designed to replace discrete resistor networks and comparators, offering integrated reset and watchdog functions in a minimal footprint. The series supports various voltage thresholds to accommodate different logic standards.

Supervisors Replacement Considerations

Cross-reference with DS1813BR-5 for alternative package options. Verify functional equivalence with DS1819AR-5 if a different threshold voltage is acceptable. Check current availability across distributors due to potential legacy status.