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   sci.electronics.basics      Elementary questions about electronics      72,318 messages   

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   Message 71,011 of 72,318   
   George Herold to All   
   Re: cmos IC question   
   11 Apr 19 14:23:49   
   
   From: gherold@teachspin.com   
      
   On Thursday, April 11, 2019 at 5:16:49 PM UTC-4, whit3rd wrote:   
   > On Tuesday, April 9, 2019 at 3:01:02 PM UTC-7, default wrote:   
   >   
   > > According to the CMOS Cookbook - Don Lancaster:  "Any "force fed"   
   > > currents above or below the supply rails must be limited to 10   
   > > milliamperes or less."   
   > >   
   > > I'm good to go.   
   >   
   > No, not if you want to have a 12V signal amplitude.   That was about burning   
   I think it's OK.  The ~8.5V clamped signal is enough to turn   
   on the 12V logic, and the IC sources less than 10 mA.   
      
   George H.   
   > the chip up, not about signal integrity.   
   > It's the value in 'absolute maximum' for current, and relates to bond wire   
   > current carrying capacity.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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