LM393A: Pin7 to gnd impedance

Hello Mike,

The output should be very high impedance, 10's of meghoms, like a reversed biased diode.

The output is the collector of a BJT transistor. With no current through on the base, the transistor will be "off".

We do not characterize this or specify this as Vcc=0V is not a valid operating condition.

This is also assuming that all other pins are at 0V. Voltages on other pins may cause internal leakages that could affect the actual value.