DS1819AR-5-U+

Supervisors Overview

The DS1819AR-5-U+ is a MicroMonitor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.7V to 5.5V and features a fixed reset threshold voltage of 4.63V. The device provides push-pull active-low reset output with a minimum timeout duration of 140ms. It is housed in a compact SOT-23-5 surface-mount package and supports an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrated power supply monitoring with fixed threshold detection
• Active-low push-pull reset signal generation
• Compact five-pin surface-mount packaging for space-constrained designs

Supervisors Applications

• Embedded processor system supervision
• Controller board power management
• Portable electronic device voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix 'U+' against current manufacturer documentation to confirm lead-free status and RoHS compliance. Confirm availability status as distribution channels may indicate limited stock or end-of-life conditions for this specific variant. Ensure the ordering part number matches the exact electrical specifications required for the target application design.

Supervisors Selection Notes

Select this component when a fixed 4.63V threshold is required for systems powered between 2.7V and 5.5V. The SOT-23-5 package is suitable for applications requiring minimal board space. Consider the 140ms reset timeout for circuits that do not require programmable delay settings. Verify compatibility with the system's logic levels and thermal requirements within the specified industrial temperature range.

Supervisors Part Context

This device belongs to the Maxim Integrated MicroMonitor family, designed for simple reset and power-supply monitoring functions. It serves as a cost-effective solution for protecting microprocessors and memory devices from brown-out conditions without requiring external components or complex configuration interfaces.

Supervisors Replacement Considerations

Consult official datasheets for direct pin-compatible alternatives within the DS1819 series or other MicroMonitor variants. Verify that substitute parts match the 4.63V threshold and SOT-23-5 package dimensions.