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by Tom Cantrell
Start ý Fly
by Wire ý Mooreýs Unlaw ý Sources
and PDF
FLY BY WIRE
As you can see from Figure 1, under-the-hood
AnyGate boils down to a two-input multiplexer.
Note that the true pin of a pair is internally
pulled down, and the complement pin is biased halfway between VCC
(2.3 to 5.7 V) and ground with a voltage divider (see Figure 1). Leaving
both pins open establishes a 0 input, and connecting the true pin
to VCC and leaving the complement pin open establishes
a 1 input.
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| Figure 1ýAnyGate has 10 pins
and almost no waiting. |
Although it is becoming a bit of a lost
art in these days of synthesized HDL Systems-on-Chips, old-timers
will recall that you can do the Boolean boogie with a complementary
2:1 mux (see Figure 2) and come up with just about, dare I say, any
gate.
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| Figure 2ýAnyGate isnýt a whopper
of a chip, but you can still wire it your way. |
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