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Comparator (LM393)

ICs & op-amps · LM393 dual

LM393 dual comparator · 2–36 V single supply · open-collector outputs (need a pull-up) · sinks 16 mA

Comparator (LM393) on the simulator's bench

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.

Typical part: LM393 dual comparator (DIP-8)

Pins

OUT A (open collector)
IN− A
IN+ A
GND
IN+ B
IN− B
OUT B (open collector)
V+

Ratings and limits

Supply	2–36 V
Output	open collector, needs a pull-up, sinks 16 mA
Response	1.3 µs

How to use it

Threshold detection: light/dark switches, battery-low alarms, zero-crossing detectors. Add hysteresis with a resistor from output to IN+.

Lessons and builds that use it

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