ben heck a/v selector, alternate chips

Hey guys, I am about to set out and create Ben Heck's A/V selector.  http://www.engadget.com/2007/03/13/how-to-make-a-solid-state-a-v-switcher/

He uses a bus switch, CBT3244A, Digi-Key part # 568-3619-5-ND (out of stock I believe).  While I could order a comparable bus switch, I have several lying around from hacking apart a kid's toy.  74hc374.

I've looked at the datasheets and, I've never been very adept at understanding them, preferring the lazymans terms.  I understand that the original chip has 2 switches (to use for two separate a/v connections, or turning both on for a connection with more pins) while the chip I have has only one switch, allowing up to 8 channels to go through.

What I'm confused about is the state of the "on" switch for the one I have, or maybe the clock.  From what I understand, they each need to be pulled LOW (connected to ground) in order for their respective inputs to flow through, can the clock, in my case, be ignored?

For the arduino tags, I do plan to make this project remote controlled.  But I'm a serious beginner in this area.  Basically I plan to replicate this project for arduino.  http://www.tauntek.com/tinyir2-learning-ir-remote-control-receiver.htm  Would there be a point to that?  Or would it be simpler to just order the chip by itself already programmed.  I think that programmed tinyir2 PIC chip and arduino chips come out around the same price wise.  I have the other components lying around already.