MXD1815UR31+T

Supervisors Overview

The MXD1815UR31+T is a supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.0 V to 5.5 V and features a fixed reset threshold voltage of 4.637 V. The device provides a manual reset input for system control and utilizes an open-drain active-low output. It incorporates a typical reset delay time of 200 ms to ensure stable power-up sequencing. The component is housed in a compact SOT-23-3 package and supports operation across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with a fixed threshold for reliable system supervision
• Includes a manual reset input allowing external control over the reset state
• Features an open-drain output compatible with various logic families
• Ensures stable power-on behavior through a defined reset delay period

Supervisors Applications

• Microprocessor (MPU) reset circuits
• Battery-powered portable devices
• Consumer electronics requiring low-power supervision
• Industrial control systems

Supervisors Procurement Notes

Verify the exact suffix UR31 to confirm the specific threshold voltage, as variations exist within the MXD1815 family. Confirm RoHS compliance status via the manufacturer datasheet. Check current lifecycle status, as this part may be discontinued or subject to limited availability. Ensure the SOT-23-3 package matches your PCB footprint requirements before ordering.

Supervisors Selection Notes

Select this component when a fixed high-voltage threshold near 4.6 V is required for 5 V systems. Consider the manual reset feature if external hardware reset capability is necessary. Evaluate the low quiescent current for battery-operated applications. Compare against other MXD181x variants if different threshold voltages are needed for alternative supply rails.

Supervisors Part Context

This part belongs to the Maxim Integrated MXD1815 series of low-power voltage supervisors. These devices are designed to monitor single-supply voltages and generate a reset signal when the supply drops below a set threshold. The series offers multiple threshold options and packaging styles to suit diverse embedded design requirements.

Supervisors Replacement Considerations

Check for direct pin-compatible replacements within the MXD1815 series that match the 4.637 V threshold. Verify functional equivalence with other Maxim Integrated supervisor ICs offering similar thresholds and manual reset capabilities.