LM393MX

Overview

The LM393MX is a dual differential analog comparator manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. It operates on a single or dual power supply ranging from 2 V to 36 V. Key electrical parameters include a maximum propagation delay of 700 ns, a typical quiescent current of 2.5 mA, and a maximum input offset voltage of 5 mV at 30 V. The device features open-collector outputs compatible with CMOS and TTL logic levels, supporting a sink current of 16 mA. It functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Dual-channel differential comparison architecture for signal threshold detection
• Open-collector output stage enabling flexible interfacing with various logic families
• Wide single-supply operational capability across standard voltage ranges

Applications

• Over-voltage and under-voltage protection circuits
• Threshold detection systems for sensor interfaces
• Simple pulse generation and timing applications

Procurement Notes

Verify the specific ordering suffix (e.g., TR for tape-and-reel or CT for cut-tape) against the required packaging format, as the base part number may not specify it. Confirm RoHS compliance status and check for End-of-Life notices, as distribution channels may list obsolete variants. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a low-cost, general-purpose dual comparator is required for standard voltage applications. It is suitable for designs where moderate speed (700 ns delay) is acceptable. Consider alternative packages like SOIC-8 with different suffixes if reel quantities are needed, or verify if the LM393M/NOPB variant better suits specific environmental requirements.

Part Context

This device belongs to the LM393 family of dual comparators, widely used in industrial and consumer electronics for basic analog-to-digital conversion tasks. The MX suffix typically denotes the SOIC-8 surface-mount package configuration. It serves as a fundamental building block for monitoring analog signals against fixed reference voltages in cost-sensitive designs.

Replacement Considerations

• LM393MX/NOPB