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The troubles about LM393

Good afternoon~ thank you for reading my topic.

Recently I bought a LM393AD. This is the LM393\\\\u2019s datasheet. The following picture is about the circuit made by myself.In my circuit,there are just two resistances.One sends while one receive. My question:

When it sent a resistance with 100R and received one with 22K. The power is 5V,why the voltage of receiving tube always is 4.9V?

Does anyone know the reasons? Can you tell me ?

Thanks in advance!

Spoken-Tutorial-Technology General None min None sec 29-03-17, 1:01 p.m. ling1995


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