Oh, one thing I did want to say:

It is designed to be triggered, take an output high for a preset period, then take it low again until the next trigger pulse.

That's fine. The relay I bought is spdt. So I can deliberately wire it "backwards" so that it's normally closed and then it goes open when the chip's output goes high. I was figuring that the output could go high for ten seconds, then go low again and not ever get triggered again.

I just need to know how to do it without that momentary contact switch.