I actually found the 4052 great for muxing a UART channel 4 ways
because you didn't have to use 2 chips; the Rx and Tx were treated
Hi
Until it is safely in the board, handle the 4052 with extreme caution
as to static. These are more easily blown than the regular ligic 4000
parts. I also recommend installing them last, after the other parts
are there to protect them.
Again, I can't over state their static sensitivity enough.
Dwight