IBIS to Spice conversion

Hello!

I have an IBIS model of Analog Switch TS5A23157 

http://www.ti.com/analog/docs/litabs...4&familyId=520

I need to convert it to spice. 

Microcap demo version has shown no result as well as Intusoft software.

Any ideas?

There seems to be a problem with spice and IBIS.
This post may be useful,
http://www.thedigitalmachine.net/eispice.download.html
It implies that you may need to go to specific vendors for a spice that will work with IBIS models, and you have to pay for the privilege.
They also point out that there are a few options, for example,
http://www.thedigitalmachine.net/eispice.download.html
If you are aware of this post, then you will know that the opinion is that your options may be limited, despite the fact that there is a claim that Microcap works (it may be the paid up version)
http://www.intusoft.com/utilities.htm#Modeling
cheers,
Richard