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|    comp.sys.apple2    |    Discussion about Apple II micros    |    56,720 messages    |
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|    Message 55,613 of 56,720    |
|    Anthony Ortiz to All    |
|    Apple II TTL to 3.3 logic    |
|    18 Jul 22 22:29:50    |
      From: anthonypaulo@gmail.com              I'm redesigning some circuitry I have on my peripheral board to a modern 3.3v       CPLD and read some articles on the interwebs stating that TTL logic is about       3.4 volts so I might get away with interfacing a 3.3 chip straight from the       Apple IIe bus and do        away with the 245 transceivers I'm using. My gut feeling is to have the 245's       there just in case and err on the safe side, but I'm curious as to what you       guys think about going raw from the Apple II bus to a 3.3v GPIO that's not       that tolerant.              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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