We found this CMOS circuit based on the PLL4046 in the December 1989 issue of Radio Electronics magazine. The circuit is powered by a 9 V voltage.
This is the basic configuration of a monostable TTL with the 74121. The trip is done with an NC...
This fixed source configuration with 78xx series regulators has already been explored in several...
In the figure we have a TTL logic interfacing circuit as CMOS logic using a 6N139 optocoupler...