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WTD: 74AS192 or 74S192 counters
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June 6th 04, 05:48 PM
Michael Black
Posts: n/a
Dr. Anton T. Squeegee ) writes:
In article COwwc.24725$jl6.6833@edtnps89,
says...
I'm building a SWRX with PLL frequency generator and need a 1/2 dozen of
these chips. They are unobtanium from my Vancouver suppliers.
I need the speed of AS or S because the master osc. will be 60-90 MHz.
The 74HC390, a dual decade counter in one package, has a maximum
clock frequency of 66MHz, and is readily available (or at least a lot
more so than the AS or S package -- less power draw too).
But given that the '192 is programmable, and this is a synthesizer
application, I suspect he wants the '192 for the divide by N counter
chain, not a fixed divider.
Michael VE2BVW
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