These retriggerable one shots provide the designer with four inputs two active high and two active low This permits a choice of either leading-edge or trailing-edge triggering independent of input transition times When input conditons for triggering are met a new cycle starts and the external capacitor is rapidly discharged and then allowed to charge again The retriggerable feature allows for output pulse widths to be expanded In fact a continuous true output can be maintained by having an input cycle time which is shorter than the output cycle time Retriggering may be inhibited by tying the Q output to an active low input