Anyone used the Maxim/Dallas Semi DS2480 or DS2490?

Would a DS2490 and a Maxim/DS 1-wire temp sensor marry together so painlessly to overcome the expense?

A PIC with USB connected to any of a zillion digital or analog temp sensors would be a lot less expensive.

And to hijack the subject a little, why are the USB PICs so big? 
Do they need a large die to support USB voltage or current reqs?
The 18F flash USB chips are going to be 28 pin and larger parts.

http://tinyurl.com/53uuw
PIC18F2455/2550/4455/4550
Data Sheet
28/40/44-Pin High-Performance,
Enhanced Flash USB Microcontrollers
with nanoWatt Technology


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