Hi,
Some weeks ago, I made a search through the net to find chips that I could use for a re-design of an old product. I had a look at the classical provider like Zarlink, Infineon and PMC Sierra and also at Exar and IDT.
I was very suprised by the new products from Exar and IDT. On a pure technical basis, I think IDT's chips are the best. I have some special requirements like connection to attenuated monitoring points and line level measurement. All this functionnalities are very well converd by Exar's and IDT's chips.
The only aspect I do not information about is the price.