LM810M3X-4.38

Supervisors Overview

The LM810M3X-4.38 is a single-channel voltage supervisory circuit designed for microprocessor systems. It monitors supply voltages and generates a reset signal when the input drops below the 4.38V threshold. The device features a push-pull, totem pole output capable of driving loads directly. It operates within a temperature range of -40°C to +105°C and is housed in an SOT23-3 package. This component ensures reliable system startup and operation by providing active high reset signals.

Supervisors Feature Summary

• Monitors a single voltage rail with a fixed 4.38V threshold
• Provides active high reset signal via push-pull output
• Ensures correct system initialization during power-up

Supervisors Applications

• Microprocessor system hardware monitoring
• Digital system power supply supervision
• Voltage level detection for embedded controllers

Supervisors Procurement Notes

Verify component status as this part is listed as obsolete. Confirm availability through authorized distributors or substitute manufacturers. Check datasheet revisions for pinout compatibility if replacing existing designs. Ensure thermal specifications meet application requirements.

Supervisors Selection Notes

Select this component for applications requiring simple, single-voltage supervision with active high output. Consider the SOT23-3 package size for space-constrained designs. Verify that the 4.38V threshold aligns with the monitored rail's minimum operating voltage. Evaluate alternative packages if higher current drive is needed.

Supervisors Part Context

Part of the LM81x series of microprocessor reset circuits from Texas Instruments. These devices are designed to monitor power supplies in digital systems. The LM810 variant specifically offers a single channel with a fixed threshold. Similar parts include LM809 and LM810 variants with different thresholds or output types.

Supervisors Replacement Considerations

Direct substitutes include MAX810MEUR+T from Analog Devices/Maxim Integrated. Verify pinout compatibility and electrical parameters before substitution. Other LM810 variants with different thresholds may require circuit adjustments.