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Raj Nambiar
07/15/12 23:32
Read: 1078 times
Dubai
Uae


 
#187943 - 74LS245 ouput cable drive distance
I just bought a PCI card for IO control, and it has TTL output signals for driving external ULNs. PCI card uses 74LS245 (IOH=3 mA, IOL=12 mA). They have provided an FRC cable, 2 meters long for the output of 245 (24 outputs + single ground wire). Can this chip drive through 2 meter cable? Ribbon cable has outputs in continuous lines, ie not with ground interleaved. Will there be crosstalk? (It works, but I just need to be sure before using it in my project)

List of 10 messages in thread
TopicAuthorDate
74LS245 ouput cable drive distance      Raj Nambiar      07/15/12 23:32      
   what is the termination      Erik Malund      07/16/12 00:31      
   Frequancy?      Per Westermark      07/16/12 00:33      
      not only capacitance      Erik Malund      07/16/12 01:22      
         Thanks for the replies      Raj Nambiar      07/16/12 01:32      
            DC      Per Westermark      07/16/12 01:50      
               one thing to consider ...      Richard Erlacher      07/16/12 03:18      
            "an industrial automation project"      Andy Neil      07/16/12 09:11      
               Industrial environments can be dangerous to electronics      Per Westermark      07/16/12 10:13      
                  optical isolation      Mahmood Elnasser      07/16/12 18:01      

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