04-21-2014 07:01 PM
When I use 4094 IC. I find the pin1 str can not operate correct. For example, pin1 'str' set to '0', the output O0-O7 should keep no change with pin2 changing. But actually, O0-O7 still change.
Can you please tell me why?
04-22-2014 08:06 AM
Your schematic had STR always grounded so I made a few changes.
However I am getting the same problem you have. I would guess the issue is in the spice model because I only see a few references to STR but they do not appear to designate how that line should operate. Wish I could give you more information but I do not know spice modeling that well.
04-22-2014 08:08 AM - edited 04-22-2014 08:16 AM
I have no idea why my attachement didn't get placed, here is one more try.
04-22-2014 08:22 AM
THANKS nutmegzzz for reply. I think it is a bug in 4094. I encount the same problem with multisim11. The Pin STR can not operate correct also. please see the attached file.