Hi,
I need to try and replace the USB chip in a rather old device.
The original chip is ISP1181BBS. I can't find this to buy, but can get ISP1181ABS.
Datasheets are here, but both appear to be pretty much identical.
A:
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B:
formatting link
So, this is kind of a generic question - what what kind of difference might you expect between these different revisions, and is it worth a punt to replace the B version with the A version and hope it will work? The unit is toast as it is, the worst case scenario is it will still be toast with an A chip installed, but I have to buy the A chip to find out.
Cheers,
Gareth.