DS90C187: Delta VOD specification

Kawai

Guru 19775 points

Part Number: DS90C187

Hi Team,

Please allow me to ask you about the delta VOD specification.

The data sheet describes delta VOD = 50mV (MAX). What is the condition for this value ?

Is it VODSEL = VIH, or is this applied to both conditions ?

Our customer expectation is to have lower value for this delta VOD when used in VODSEL = VIL, since their receiver requirement is tight.

Best Regards,

Kawai

over 6 years ago

0 Jonathan Nguyen over 6 years ago

TI__Expert 4555 points

Hi Kawai,

Unfortunately since this is a very old part acquired from National, it will take us time to see if we have and additional data for this parameter. Thank you for your patience.

Regards,
Jonny

0 Kawai over 6 years ago in reply to Jonathan Nguyen

Guru 19775 points

Hi Jonny-san,

Thanks for your support.

Our customer is judging which device to use by this week. Could you please give us the information by 7/19 US time ?

If you don't have data, could we have comment from design point of view ?

Best Regards,
Kawai

0 Kawai over 6 years ago in reply to Kawai

Guru 19775 points

Hi Jonny-san,

Did you have chance to look into this ?
We need your help.

Best Regards,
Kawai

0 Jonathan Nguyen over 6 years ago in reply to Kawai

TI__Expert 4555 points

Kawai-san,

Please ignore the TI Thinks Resolved notification you may have received, I had clicked that button by accident.

Unfortunately I could not find any data for this specific parameter. I am working on getting an EVM to try and measure this spec (as well as the other specs you have requested in other threads) on my own. I will do my best to update you for when I can expect to get some measurement results by.

Regards,
Jonny

0 Jonathan Nguyen over 6 years ago in reply to Kawai

TI__Expert 4555 points

Kawai-san,

The change in VOD for VOD = H and VOD = L is the same (50ns).

Best Regards,
Jonny

0 Kawai over 6 years ago in reply to Jonathan Nguyen

Guru 19775 points

Hi Jonny-san,

Thank you so much for your support.

Best Regards,
Kawai

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DS90C187: Delta VOD specification