Is it possible to set a cooldown on a macro?

I have 2 dps trinkets with a cooldown of 1:30m each and I was looking to put both of them in 1 button and set that button to have a cooldown of 45secs.
So I would press it, it would use one of the trinkets and after 45secs it would allow me to use the other trinket (while trinket1 is on cooldown) and so on.

Is that doable?