LM393 Comparator — Specifications & Equivalents

About the LM393

The LM393 is a Comparator from Texas Instruments with a supply voltage (V_CC) of +36 V. It is supplied in the DIP-8 package.

At a glance

• Type: Comparator
• Supply voltage (V_CC): +36 V
• Package: DIP-8
• Manufacturer: Texas Instruments

Typical applications

Supply headroom of +36 V determines the usable output swing; allow for the device's output saturation limits when planning signal levels.

Choosing a replacement for the LM393

A drop-in substitute for the LM393 should match its polarity and offer a compatible supply range (+36 V).

Mechanically, check the replacement against the DIP-8 footprint and confirm the pin order — parts sharing a package outline do not always share a pinout.

Where the application switches inductive loads or runs near the voltage limit, keep extra headroom rather than choosing a part that only just meets the original numbers.

Frequently asked questions

What is the LM393?

The LM393 is a Comparator IC.

What package does the LM393 come in?

It is listed in DIP-8. Verify the pinout of the specific variant, as one outline can carry different pin assignments.

What can I use to replace the LM393?

This page lists 1 candidate equivalent matched on electrical ratings and package. Any replacement should meet or exceed the original voltage, current and dissipation figures and use a compatible drive level.