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Tool/software:
I want to design circuit with 2 seconds delay in output waveform change compared to input waveform change and I am considering using TLC555-Q1.
However, datasheet seems to assume input waveform is square waveform with constant frequency.
In my case, input waveform is always HIGH, drops to LOW when certain problem occurs and then recovers to HIGH again when problem is solved.
Under these input waveform conditions, is the TLC555-Q1 suitable for the purpose?
Jiwon,
The output of this circuit goes low immediately when input goes low. For as long as input stays low, output never goes high. Once input goes high, the output remains low for 2 seconds, then output goes high. For cases where input is not high for at least 2 seconds then output always stays low.
N1 and N2 can be replaced with a logic buffer (or comparator) with open drain output. N3 an be replaced with a logic invertor.
