RE: [IBIS-Users] IV curves do not pass through origin

Hi Andy,
  Thank you!
  

Regards
Xuefeng


-----Original Message-----
From: owner-ibis-users@eda.org on behalf of Andrew Ingraham
Sent: Tue 5/23/2006 9:57 PM
To: ibis-users@eda.org
Subject: Re: [IBIS-Users] IV curves do not pass through origin
 
>   I wonder If it's proper that IV curves do not cross origin. Where is
> the I or V source?

It's fairly easy for the curves to not cross the origin.  A simple case of
this, is when the output buffer has resistors (or weak FETs that are always
on) between the output pin and power and ground.  I don't know why those
would be used in an output buffer that can't be tri-stated.

Regards,
Andy

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