HCF4021BE usage w/ uC
Can someone explain how the heck you operate this thing?


Clock goes up and the serial input is latched in and the other bits all move over 1. Just like the truth table says.

Or it can work in parallel, also just like the truth table says.


  Can this thing source current?


Nothing worth talking about, just like most CD4k chips. Stick to 74HC/LVC if you need current.


  I see the data and clock pins, but where's the latch?


Latch? We don't need no stinking latch!