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Re: I have a IIgs. So now what?

David Wilson wrote:

On Mar 2, 9:14 pm, "Jon" <jon...@gmail.com> wrote:


Hmm, even more interesting is, Jaycar also has 7406s (CAT. NO.
ZS5806).  Is the clone Disk ][ controller a 1:1 clone of the apple
card?  It might be better then to use the 74LS05?



74xx = TTL = (10mW/10ns)
74Lxx = Low Power TTL = (1mW/30ns)
74Sxx = Schottky Diode TTL = (20mW/3ns)
74LSxx = Low Power Schottky Diode TTL = (2mW/10ns)
74ALSxx = Advanced Low Power Schottky Diode TTL = (1mW/4ns)

So replacing a 74LS chip with the 74 will have about the same timing
but will consume more power.

If you can determine that the outputs of the 74LS06 will never exceed
5v, a 74LS05 will be a good replacement.


It's actually the other way around--the '06 was a harder-to-find
replacement for the correct '05.

-michael

NadaNet networking for Apple II computers!
Home page:  http://members.aol.com/MJMahon/

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