http://www.play-hookey.com/digital/555/timer_555_sequencer.html Wanted to make input, B,C (displayed in attached picture.) Input will be arduino SPI 1MHZ(planning) And before make it I run program at orcad. But result is terrible.
I don't understand why middle voltagemeter is getting long pulse(looking C3 R3, it will be 0.5*1*1.1u) and didn't know why it get 200ns period between red graph and pink graph.
Also yellow(last one) have to be 0.5n*1k*1.1=0.55us but 0.7us.
Why my circuit program didn't work?