Pages

Saturday, January 19, 2013

MCP23008 IO Expander - Demultiplexer








Posted by Picasa 

http://www.blogger.com/blogger.g?blogID=1840459474737789074#editor/target=post;postID=8212968488023050570

I read the datasheet and found the HC137's low active output can source/sink 25mA each pin.  So I think I can use LEDs to indicate which line is active.

.END

No comments:

Post a Comment