DS1813R-15-U

Supervisors Overview

The DS1813R-15-U is a single-channel power supply supervisor circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a voltage range of 4.75V to 5.25V, with a fixed threshold voltage of 4.13V. The device utilizes a CMOS technology and is housed in a compact SOT-23-3 package. It features a low-active reset output with a minimum timeout of 100ms to ensure system stability during power transitions. The component supports through-hole or surface-mount installation styles and functions reliably across an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Monitors power supply status using a precision temperature reference and comparator circuit
• Generates internal power-fail signal when voltage exceeds tolerance limits
• Maintains reset state for approximately 150ms to allow processor stabilization
• Supports pushbutton reset functionality via the reset output pin

Supervisors Applications

• Microprocessor system power monitoring
• Battery-powered device supervision
• Embedded controller reset generation
• Industrial control system power integrity management

Supervisors Procurement Notes

Verify the exact suffix configuration as datasheets may list variations such as T&R packaging. Confirm RoHS compliance status for specific manufacturing lots. Check current availability as this component may be subject to limited supply or end-of-life restrictions depending on the production batch. Ensure compatibility with existing PCB footprint designs before procurement.

Supervisors Selection Notes

Select this component when a fixed 4.13V threshold is required for 5V logic systems. The SOT-23-3 package offers space efficiency for compact designs. Consider the 100ms minimum reset timeout duration for system timing requirements. Verify that the open-drain/open-collector output type matches the downstream logic interface requirements.

Supervisors Part Context

This part belongs to the EconoReset series, designed for cost-effective power supply monitoring solutions. It integrates essential reset generation capabilities into a minimal footprint. The series targets applications requiring reliable power supervision without complex configuration needs. It serves as a fundamental building block for ensuring stable operation in digital circuits.

Supervisors Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio. Verify threshold voltage matching if substituting with other fixed-supervisor ICs. Ensure package dimensions align with existing board layouts. Confirm functional equivalence regarding reset timeout characteristics and output drive capability.