902 to 928 MHz ISM Transceiver

Hi all,

I hope that I am in the right section of the forum. I am looking for a RFIC Transceiver that operates in the ISM band 902 to 928 MHz. The one with the highest data rate I am able to find is the TI CC1200. Couple questions, does anyone here know of other transceivers with a higher data rate? If the CC1200 with 1.25Mbps has the highest data rate, is there a reason to that.

Thanks a lot for any help.