Hi Lee,
I'm taxing old memory cells but in the 7400 series of TTL chips
the
74145 is a BCD decoder
which with 4 lines in will give 0 to 9, or 10 outputs, if that is what you
want. With a 74159 you can decode
all four lines for 16 possible outputs. You don't have to worry about unused
states if that is a chip you find.
There may be a CMOS equivalent but I don't know it offhand.
73,
Bob
K2TK ex KN2TKR & K2TKR
On 9/16/2011 11:27 AM, Lee Buller wrote:
>
> I have lost an email where someone described a binary decode chip for band
> decoding. The chip featured 4 inputs (binary) and 9 outputs. (i might be
> wrong
> about the 9 outputs)
>
> Anyone have this information?
>
> Lee
> K0WA
>
>
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