The datasheet says that the 88920 is for slower 20 - 25 MHz operating frequencies. And that the 88916 isn't suited for the slower speeds.

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Just curious - where in the datasheet does it say that they're not suitable for slower speeds?

Although I am happy to see John's offer. If only I can remember it when I eventually get back to this project. I've implemented a new rule for myself, where I buy nothing until the moment I'm ready to use it. No more, "I'll buy this. It will be useful in that project three years from now and might be hard to find then." That's how I ended up with a living room (soon to be attic) full of electronic crap....

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Ha ha ha... If only we all followed those rules... Then again, I don't know if my Diesel Chevette would be finished and running now if I didn't hoard parts over the years... and I finally got a latest-mask version of the MC68060 (71E41J) which is a .32 micron device (compared with the original, which is a .6 micron device), and if I hadn't kept around my CyberStorm Mark III until I found someone who could repair it, I wouldn't have a working 80 MHz m68060 system right now... So it all depends.

When I lived in NYC, I always had to prefer smaller machines to larger ones, and I suppose I've tried to keep that philosophy. But if only we didn't hoard everything, there'd be one less stereotype about us, I suppose.

These chips are small, so I'll keep them for when you need a few, trag.