RE: [IBIS-Users] Question about differential pair buffer

Ramiro,

Your question is not entirely clear to me.  Are you talking
about the pullup I-V curve, or the waveforms (V-t) curves?

In case you are talking about the pullup I-V curve, the next
question is: is this differential pair open collector?  I.e.
is there absolutely nothing on the top side in the buffer?
If that is the case, you can omit the [Pullup] I-V table
all together.

Arpad
============================================================

-----Original Message-----
From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of RODRIGUEZ_LECONA_RAMIRO
Sent: Monday, June 06, 2005 10:58 AM
To: ibis-info@eda.org; ibis-users@eda.org
Subject: [IBIS-Users] Question about differential pair buffer

Hi all, 

    If I want to model an buffer that consists of an BJT (npn) differential 
pair, Does it make sense to refere the pullup curve to Vcc? (Because I don't 
have pullup structures). 

  Best Regards, 

  Ramiro
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