LM397MFX

Overview

The LM397MFX is a single general-purpose voltage comparator manufactured by Texas Instruments. It is housed in an SOT-23 surface-mount package and operates within a supply voltage range of 2V to 36V. The device features low input bias current, high open-loop gain, and fast response times suitable for precision applications. It includes internal compensation to ensure stability without external components.

Feature Summary

• Single-channel differential voltage comparison
• Internal frequency compensation for stability
• Low input bias current operation
• Wide single-supply voltage compatibility

Applications

• Precision threshold detection circuits
• Window comparator configurations
• Over-voltage protection systems
• Zero-crossing detectors

Procurement Notes

Verify the specific suffix MFX against the manufacturer datasheet to confirm the tape-and-reel packaging configuration. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the ordering part number with official Texas Instruments documentation to avoid substitution errors during procurement.

Selection Notes

Select this component when a single comparator with wide supply range and low power consumption is required. Consider the SOT-23 package size constraints and thermal characteristics. Evaluate the input offset voltage and response time against system timing requirements before finalizing the design choice.

Part Context

This part belongs to the LM397 family of general-purpose comparators. It serves as a standalone solution for analog signal processing tasks requiring voltage level discrimination. The device integrates essential comparator functions into a compact footprint, reducing board space compared to discrete transistor solutions.

Replacement Considerations

LM397MX is a compatible alternative from the same series offering identical electrical performance in a similar package format.