I have about 45-50 digital lines all grouped together in a bus that I wish to enable/disable with a microcontroller. I don't need to individually enable/disable them, I just want to turn the entire bus on or off (aka connected or disconnected between input and output). I don't have enough I/O pins for that on my micro, so I was thinking about using some kind of IC that can switch a signal on and off. I am NOT looking for a mux/demux chip, or a latch, just something that has an "output enable" that I can interface with my uC. Ideally it would run on 5V, but I could probably get away with a 3-3.6V port if it has 5V-tolerant I/Os. The only chips I have found like this are 8 or 10 bits wide, and I need many more lines, without using 5+ chips. Space is somewhat of an issue.
So what are my options here?
So what are my options here?