Quote:
Originally posted by Lloyd Burns
If you put a resistance from input to ground that is in the range of the pull-up, the state of the output would be practically indeterminate.
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Thanks LLoyd,
I should add here for anyone following this thread, if the input circuitry is CMOS and if you were to encounter the above scenario, this logic family has a nasty tendency to go into a linear region (acting like an amplifier instead of a digital IC)and that causes the IC to draw high currents from the power supply.
All in all, we must use the equipment as intended, digital devices to digital inputs.