SN65HVD1787: change of VOH/VOL according to IOH/IOL

Takao Yamamoto5

Expert 1690 points

Part Number: SN65HVD1787

Dear all,

Do you have the graph or data or calculation tool about the change of VOH/VOL according to IOH/IOL?

Best regards,

over 7 years ago

0 Adrian Ymeraj over 7 years ago

TI__Expert 3810 points

Hi Yamamoto san,

unfortunately for this device the only information that there is on the datasheet is about the Differential Output Voltage vs. Differential Load Current plot, that you can find on Figure 4. For your answer, I'll have to perform the test in the lab and I'll get back to you as soon as I have the results.

Thank you for your patience.
Best regards,
Adrian

0 Takao Yamamoto5 over 7 years ago in reply to Adrian Ymeraj

Expert 1690 points

Hello Adrian-san,

Thank you for your support.
I am looking forward to hearing from you.

Best regards,
Takao Yamamoto

0 Takao Yamamoto5 over 7 years ago in reply to Adrian Ymeraj

Expert 1690 points

Hello Adrian-san,

I would like to check before your test result.

IBIS model has typical I-V specifications.
I think to estimate the change of VOH/VOL according to IOH/IOL by this model.
Is this way correct or wrong?

Best regards,

0 Adrian Ymeraj over 7 years ago in reply to Takao Yamamoto5

TI__Expert 3810 points

Hi Yamamoto-san,

yes the IBIS model is the correct model to use for this purpose. For this specific device you can even find the IBIS model online on the Tools and Software tab on the webpage of the device, or you can just click the following link:

http://www.ti.com/analog/docs/litabsmultiplefilelist.tsp?literatureNumber=sllc357&docCategoryId=4&familyId=545

If you know how to use this file, you could even run the simulation by yourself and obtain the plot that you requested. If not I can do that without any problem, but before doing the simulation I want to ask what are you really interested to see?

Do you want the graph for the digital pins? Specifically the RXD pin? And moreover, do you need a whole graph or only certain points of VOH/VOL regarding IOH/IOL?

Please let me know if this is helpful.

Thank you and best regards,

Adrian

0 Adrian Ymeraj over 7 years ago in reply to Takao Yamamoto5

TI__Expert 3810 points

Yamamoto san,

do you have any updates on this? Could you solve your issue? If there is anything else that I can help you with, please let me know.

Regards,
Adrian

0 Takao Yamamoto5 over 7 years ago in reply to Adrian Ymeraj

Expert 1690 points

Hello Adrian-san,

Thank you for your support.
Sorry for my delay to check 'resolved' button.

Best regards,

Interface

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SN65HVD1787: change of VOH/VOL according to IOH/IOL