Subject: Questions

From: Tareq Shahwan <[email-masked]>
Date: Mon, 13 Nov 1995 16:18:05 -0600 (CST)

All,

 I need some clarification on the following :

  (1) When running simulations on an "input buffer with Bus-Hold" to extract cla mp
      data, should the bus-hold circuitry be disconnected ?.  In other words,
      should we include the contribution from the Bus-Hold circuit in the clamp data.
      I would think not, any suggestions ?
  (2) Similarly, some of our devices have the so called Power-On-Demand (POD) fe ature
      on the output buffer.   In a BiCMOS device, this feature works to reduce the
      base current in the pulldown transistor when the output voltage is below a preset
      level, thereby reducing power consumption.  While this circuitry can be
      disconnected in a simulation, it is always present in real-life.  Again, should
      the effect of such circuit be incorporated into the pulldown data ?.

 Please advise !

 Tareq Shahwan, ABI applications
 Texas Instruments