RE: Problem with clocked driver

Just in case my question wasn't clear, I'm attaching below a PDF file that
illustrates the driver behaviour. The PDF file shows three plots. The top
plot is the driver output for the input stimulus shown in the middle plot
and the clock input shown in the bottom plot.

Please observe that the driver output stays low disregarding the input
stimulus change from low to high. The output only changes to high when the
driver receives a rising clock edge. The challenge here is on how to
generate the V-I curves?

Any ideas?

Thanks.

Hassan.

-----Original Message-----
From: Ali, Hassan [KAN:0G15:EXCH]
Sent: Thursday, August 31, 2000 2:18 PM
To: ibis
Subject: Problem with clocked driver

I'm trying to create an IBIS model of a differential driver from its
encrypted HSPICE model. The driver operates with the P and N outputs each
terminated with 50 ohm to VDD (=1.8V). This driver has a couple of unusual
characteristics:

- transient simulation shows that at time=0 the driver output is around
950mV regardless of the input stimulus voltage.
- the driver has a clock input as one of the driver subcircuit parameters.
The driver output follows the driver input stimulus only upon receiving a
rising clock edge.

Does anybody know how I should go about creating the IBIS model of this
driver (say using s2ibis2 program)?

Thanks.

Hassan.