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Switching circuit with input clock

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sri2014:
i have attached the timing diagram. I want something similar to monostable multivibrator but with so additional features. don't know how the circuit will be.

Case 1:
I want the output to go high at the rising edge of the input, output stays high as long as the input is high but output will be pulled down after 500ms even if the input is high.

Case 2:
Output should go low if the input is less the 500ms, i.e. if the Input is of 300ms the output will also be of 300ms.

SiliconWizard:
If I get it right, what you want is basically some pulse width limiter.

One simple way of achieving this with discrete parts would be to just "AND" the output of a monostable with the input signal.

Benta:
CD4538/MC14538 set up as edge triggered MMV, plus an AND gate at the output.


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