Re: [linuxdc-dev] DC Parallel Loigc Voltage

[Michael R. <mro...@fu...>]

If I'm correct I think it may be TTL as I've just discovered this is 
what the standard PC parallel port and that LS indicates TTL (LS is in 
the names of all of the parts Bitmaster and Kiyoshi used).  So I think 
it's safe to assume that it's TTL (5V Power: High = 2.4V Low=0.5V).

Thanks,
Michael Robinson
mro...@fu...
www.fuzzymuzzle.com

Michael Robinson wrote:

> Hey,
>
> Does anybody know what the voltage of the logic signals in the 
> parallel port are?  Like does anyone know if they're TTL (5V) or CMOS 
> (3V) outputs?  If not I'll just have to pull the scope out and check 
> it out, I'll post it when I figure out.
>
> Michael Robinson
> mro...@fu...
> www.fuzzymuzzle.com
>
>
>
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