Are bidirectional cmos to ttl ICs ??

Discussion in 'General Electronics Chat' started by mohammad2050, Nov 16, 2014.

  1. mohammad2050

    Thread Starter Member

    Nov 14, 2014
    56
    1
    i have a question about cmos to ttl ICs (for example SN74HC244) . Are bidirectional this ICs ??
     
  2. RichardO

    Well-Known Member

    May 4, 2013
    1,238
    384
    The SN74HC244 is not bidirectional. For that you would need a SN74HC245 or equivalent. The SN74HC244 and the like are not really intended to convert between CMOS and TTL levels. They are usually used in a circuit that is powered by a single 5 volt power supply. Does this answer all of your questions?
     
  3. mohammad2050

    Thread Starter Member

    Nov 14, 2014
    56
    1
    yes
    thank you
     
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