BitBasics - 74xx595 / 74HC595 - Schieberegister

Let's take a look at the 74HC595 shift register used to increase the number of outputs. If you need a large amount of outputs shift registers like the 74HC595 are usually a goot choice. With only a few pins coming from your control circuit you can manage eight outputs. The clever part: The IC can be chained without using additional control pins increasing the number of outputs on and on. Datasheet: http://www.nxp.com/documents/data_she... 74**595 @ Raspberry Pi: http://www.instructables.com/id/Using...