SN54AC00-SP: sn54ac00w_sp

Hi Lang,

Where did you get the model? I do not see one on the product folder. 

www.ti.com/.../SN54AC00

Hi Lang,

Let me see if I can add these voltage levels for you. Will update you on when this can be finished. 

Hi Albert,

Do you have a timeline when it would be done? Our customer is waiting for it. 

Hi Lang,

I will have this for you tomorrow. 

I saw that you had the model characterized at 2.5V±10%. We use the device at 2.5V±5% instead of 10% tolerance due to rise/fall time and jitter issue at 2.5V-10%. Could you have the model done at 2.375V, 2.5V and 2.625V?

Thanks so much for your help,

Lang

Hi Lang,

I will have to talk to the design to see if they can send over some data for the 5% tolerance. 

Something wrong with the ibis model and would not run. Please advise.

WARNING - Model out_2.5v: The [Rising Waveform]
with [R_fixture]=50 Ohms and [V_fixture]=0V
has TYP column DC endpoints of 0.00V and 2.07v, but
an equivalent load applied to the model's I-V tables yields
different voltages (-0.00V and 1.95V),
a difference of 0.00% and 6.44%, respectively.
Warning detected by hpeesofsim in the IBIS file `H:/LTRINH/miscellaneous/simulation/IBIS_models/TI/sn54ac00w_sp_2V5_3V3_5V.ibs'
during netlist flattening.
WARNING - Model out_2.5v: The [Rising Waveform]
with [R_fixture]=50 Ohms and [V_fixture]=2.5V
has TYP column DC endpoints of 0.66V and 2.50v, but
an equivalent load applied to the model's I-V tables yields
different voltages ( 0.48V and 2.50V),
a difference of 8.93% and 0.00%, respectively.
Error detected by hpeesofsim in the IBIS file `H:/LTRINH/miscellaneous/simulation/IBIS_models/TI/sn54ac00w_sp_2V5_3V3_5V.ibs'
during netlist flattening.
ERROR - Model out_2.5v: The [Falling Waveform]
with [R_fixture]=50 Ohms and [V_fixture]=0V
has TYP column DC endpoints of 0.00V and 2.54v, but
an equivalent load applied to the model's I-V tables yields
different voltages (-0.00V and 1.95V),
a difference of 0.04% and 30.31%, respectively.
Status / Summary
hpeesofsim (*) 511.update1.0 Nov 21 2019, MINT version 5
(64-bit windows built: Fri Nov 22, 2019 03:45:24 +0000)
-------------------------------------------------------------------------------
Simulation finished with errors.
-------------------------------------------------------------------------------

I'm not seeing any errors with 3.3V and 5V within the same model.

Hi Lang,

Let me take a look and see if I can fix this. I am not an expert in IBIS models, so there may have been something wrong I did when making this. 

Hi Lang,

Our design team is working to fix this and we should have a solution by tomorrow. 

Hi Albert,

Any update on this? Thanks,

Lang

We need the IBIS model to simulate output waveform (rise/fall time, logic levels...) over a transmission line to a load for signal integrity. If you have to bench test it, when can you have one made?

Thanks,

Lang

Lang,

I will talk to the design team and seewhat we can do.