MAX395CNG+  &  Arduino

Forum 2005-2010 (read only) Hardware Interfacing
1

http://datasheets.maxim-ic.com/en/ds/MAX395.pdf

8-channel, serially controlled, single-pole/single-
throw (SPST) analog switch

I snagged this ic in the hopes of expanding the outputs of my Arduino. Am I barking up the wrong tree?

I was under the impression that I would be able to feed this switch's inputs w 5.5 and then send a high/low value by triggering the switch for any of the 8 pins.

I realize I will need the spi library and the code to make it actually work, I'm looking for input if this is a viable solution before I try to figure all of it out to no end. I don't mind trying it out if noone else has though, just figured it was worth a quick query. :-/

2

Yes you can do this, however for expanding the outputs it is not the best arrangement. You will need either pull up or pull down resistors to get a zero and one and the current output will be limited.

You need something like a shift register HTC595, addressable latch or port expander MPC23016 or MPC2308.

3

Thanks. I've been trying to work out the details on this and have yet to make it work. I will take your suggestions into account and do more research.