View Full Version : increasing I/O

11-28-2006, 03:51 AM

I am working on a project that needs more output pins. I thought I remember seeing an article in nuts and volts but now I cant seem to find it. Can some one direct me to a source of information on this topic? I think the article used a little ic that could be daisy chained and added 8 outputs.

Thanks for the help


Mike Green
11-28-2006, 03:59 AM
The 74HC595 will do what you want. Look in the integrated circuits part of Parallax's website (under Accessories) for the description <http://www.parallax.com/detail.asp?product_id=602-00009> and links to datasheets and app notes <http://www.parallax.com/dl/docs/books/sw/exp/sw23a.pdf> and <http://www.parallax.com/dl/docs/books/sw/exp/sw23b.pdf>.

Post Edited (Mike Green) : 11/27/2006 9:09:56 PM GMT