Hello to all, I'm in need of a simple delay circuit for the positive edge of a pulse of 12 VDC. I need to create a delayed version of about 20 uS and it must be realiable and within a couple of uS tolerance. I am planning to use the 74HC123 dual oneshot for the delay control but i'm not sure how best to translate 12 volts down to 5 and back up to 12 again at the output without any unrealiablities adding to the circuit. I'm guessing two tranny's and four resistors would be a bare minimum, but i'm not sure which transistors i need to use and how best to bias and supply voltage/current to them for the desired results. (12>5Vdc..20uS delay..5>12Vdc) Can anyone offer advice on this?
Thanks, Mark Kelepouris