If you’re not familiar with the 555 timer, suffice it to say ... mainly by the total propagation delay (~ 5.2 ns) plus some small R and C of the circuit itself. When used with typical RC values ...

This is a snap with a microcontroller with a proper timer ... it’s a 555 with a huge programmable capacitor that only costs two bucks. After building a programming circuit from a 74125 ...

IC NE/SE 555 is a highly stable device for generating accurate time delays. Commercially, this IC is available in 8-pin circular, TO-99 or 8-pin DIP, or 14-pin DIP packages. The salient features of ...