LM339N

These devices consist of four independent
voltage comparators that are designed to operate
from a single power supply over a wide range of
voltages. Operation from dual supplies is also
possible as long as the difference between the two
supplies is 2 V to 36 V and VCC is at least 1.5 V
more positive than the input common-mode
voltage. Current drain is independent of the
supply voltage. The outputs can be connected to
other open-collector outputs to achieve wire-AND
relationships

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