The LM393 is the smaller sibling of the LM339. Whereas an LM339 has four comparators in it, the LM393 has two. As such there’s a nearly limitless amount of things that can be done with this IC (essentially any project where a section of an LM339 is required.)
This IC take a pair of analog voltage levels and effectively converts them into a digital signal (high or low.) When the negative input is higher voltage than the positive input, the comparator goes low. When the positive input voltage is higher, it swings high. Besides being used in comparator applications, another set of applications are digital voltage level converters and output buffers for micro controllers with lower current sink capabilities. Its input voltage limit is 36V rail to rail with negative rail supported. This allows a wide variety of applications including automotive voltages.
We hope you enjoyed this blurb on the LM393, catch you next week.