SN65HVD3088E: Impedance between A pin and B pin

The equivalent schematic can be found in Figure 21 in the datasheet. The impedance between A and B is about 400kOhm (2x of a single node). 

hi Hao

Thank you for your reply.

I checked Figure.21 you mentioned.

Does the meaning of 400kΩ you mentioned mean the sum of the 180kΩ resistors (red circles in the figure below) listed in A input and B input (360kΩ)?
(If so, it's not enough for 40kΩ, so please tell me the details.)

Best Regards,

Y.Ottey

Hi Hao

Thank you for your reply.

I understand or your reply.

I could understand the reason for 400kΩ.

Regards,

Y.Ottey

Hi Hao, other TI Team member

If you know the deviation of impedance 400kΩ between A and B mentioned, please let me know.
(Of course, I think that there is a deviation in the 180kΩ and 36kΩ resistors shown in Figure.21, so I would like to know how much the deviation will be.)

Regards,

Y.Ottey

Ottey-san,

The silicon resistance could have large variation like +/-20%.

Hi Hao

Thank you for your reply.

In other words, is it correct to recognize that the internal 180kΩ or 36kΩ resistance has a deviation of up to ± 20% and the impedance also has a deviation of the same amount?

Best Redgards,
Y.Ottey

Yes. That's correct.