MXD1812XR44+T

Supervisors Overview

The MXD1812XR44+T is a fixed-threshold voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 1.2 V to 5.5 V and monitors a single input channel. The device features an active-high, push-pull output with a reset delay time of 100 ms. It is housed in a compact SC-70-3 surface-mount package and supports an operating temperature range from -40°C to +105°C. The circuit draws a typical quiescent current of 9 µA and provides overvoltage detection at 4.446 V.

Supervisors Feature Summary

• Provides automatic system reset via active-high push-pull output when monitored voltage exceeds threshold
• Ultra-low power consumption suitable for battery-operated applications
• Compact three-pin SC-70 surface-mount packaging for space-constrained designs

Supervisors Applications

• Portable electronic devices requiring low-power voltage supervision
• Battery-powered systems needing reliable power-fail detection
• Embedded controllers requiring automated reset upon overvoltage events

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free certification prior to procurement. Check for obsolescence notices as this part may be discontinued. Ensure storage conditions meet specified humidity and temperature limits to maintain integrity. Validate package marking against official datasheet specifications to prevent counterfeit substitution.

Supervisors Selection Notes

Select this component when an active-high output signal is required for system reset logic. The SC-70-3 package is appropriate for high-density PCB layouts. Consider the 100 ms reset delay duration relative to microcontroller startup times. Verify that the 4.446 V threshold aligns with the specific rail being monitored. Ensure the 9 µA quiescent current meets strict power budget requirements.

Supervisors Part Context

This device belongs to the MXD1812 series of ultra-low-power reset circuits. It shares functional similarities with other members like the MXD1812XR41+T but differs in output polarity and threshold voltage. The series is designed for general-purpose voltage monitoring in consumer and industrial electronics where minimal standby current is critical.

Supervisors Replacement Considerations

MXD1812XR41+T offers similar functionality but features an active-high output with a different threshold voltage.