I have several shift registers and only one "read" pin.
I would like to know if I can use PNP transistors to switch between the registers ?
So every emitters will be connected to the data output of his associated shift register, every collectors connected to the single input and the base connected to some current source allowing me to switch between the registers. I'm a bit scared about signal integrity. Does it sound ok for you or a total non sense ?
(Don't take in account the selected parts number, just for the example)
EDIT : A simple remark, clocks and latches are all "synchronized" on the same two pins. So this would allow me to drive virtually as many register as I want with only 3 pins used on the arduino.