So, once we’ve decided to go with a 555-type circuit, it’s time to have ... of the fastest edges I have measured on CMOS logic. Since the RS latch provides two outputs, you can choose either ...

The spacing between these ‘Well Taps’ should not be too high as this would increase the resistance R1 and R2 and this could make the circuit susceptible to latch-up. Refer figure 3 for a typical CMOS ...