BBD-MN3010 and MN3011- is a MN3101 clock necessary?

[René Schmitz]

Hi all!

That would be the 3-bit parity function (i.e. two cascaded XORs.) 
Output is 1, when the number of 1's at the input is odd, as with a 
two gate XOR. 
Don't know if they're available in MSI, though, and I don't see why 
I should need them here. The 4017 could be set to divide by 4, counting 
thru steps 0..3, steps 1 and 3 are the clock lines. If you want higher 
pulse/pause ratio set it to divide by 10 (free running), and use outputs 
1-4 and 6-9 for the two phase clock.  Of course a higher frequency is 
needed. ORs may help here to sum several lines together! Diodes would be 
crap, since they can't sink current (discharge the capacitive load).

Bye,
 René


At 10:10 04.05.00, Scott Gravenhorst wrote:
>Can't say I've seen a 3 input exclusive OR gate.  What's
>the logic map gonna look like?
>
>"Theo" <t.hogers at home.nl> wrote:
>>What about a 4017 and some 3 input exor gates.
>>(diodes may work as well)
>>
>>Cheers Theo
>
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