Published:2009/7/9 22:09:00 Author:May | From:SeekIC
Process-control applications often require a monostable multivibrator (one-shot) with a pulse width that can be selected on-the-fly.
This circuit uses two CD4051B analog multiplexers to select the required timing components for the multivibrator, and hence, the pulse width. The multiplexers' address input comes from an 8-bit latch. Bit D6 tells the multivibrator whether to trigger on the leading or trailing edge of the trigger input. Bit D7 determines whether the multivibrator should be in a retriggerable or nonretriggerable mode.
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