Complete beginner of 76 new here, so hello all.
I have been figuring out how a 74HC390 works with its two sections allowing frequency division by 2 or 5 (each having two sections) so I can have division by 2, 4, 5, 10, 20, 25, 50, 100. In all cases there seem to be alternative ways of doing this. I would like to know how the initial input and subsequent overall output pins are chosen. I realise that using several flip flops is a matter of strapping one output to another input, but it is the choice of order that puzzles me. Once I've found someone who can explain how this is done, I'll post more detail if required.
I have been figuring out how a 74HC390 works with its two sections allowing frequency division by 2 or 5 (each having two sections) so I can have division by 2, 4, 5, 10, 20, 25, 50, 100. In all cases there seem to be alternative ways of doing this. I would like to know how the initial input and subsequent overall output pins are chosen. I realise that using several flip flops is a matter of strapping one output to another input, but it is the choice of order that puzzles me. Once I've found someone who can explain how this is done, I'll post more detail if required.