In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Peter Van der Zee wrote:

Hi Counter;

I have experienced clocking at least one of them at 110 MHz, but they are very fussy about the shape and amplitude of the clock and the supply voltage. Certainly not reliable. And at that most peter out before that..... 105 seems to be the limit. This is externally clocked. What it can do with its own oscillator I have not tried.... to tough (impossible?) to get fundamental frequency elements at those speeds. If I recall correctly, there are some SAW resonators available at 70+ MHz, but can not remember seeing any at 80.

Cheers,

Peter (pjv)

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