SN65LVDS93A: Res-network needed? - SN65LVDS93A

Marion Loessl

Expert 3945 points

Part Number: SN65LVDS93A

Hello,

is the following res network needed for the 24 Bit data line?

Kind regards,

Marion

over 3 years ago

0 William Yi over 3 years ago

TI__Expert 4160 points

Hi Marion!

As long as you have the correct input voltages to the data inputs (1.8V or 3.3V), no pull-ups are needed. They are there to accommodate for voltages should the input voltages not be 1.8V or 3.3V.

Respectfully,

William Y.

0 Kalpesh Diyora over 3 years ago

Prodigy 170 points

HI William,

We have connected to RGB interface of soc on same PCB board with voltage group of 3.3V. So, It is not need to keep external PU in this case, Right?

0 William Yi over 3 years ago in reply to Kalpesh Diyora

TI__Expert 4160 points

Hi Diyora,

That is correct! This resistor network would not be needed.

For reference, there are many E2E questions that collaborate this use and goes over this exact question:

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/431725/many-sn65lvds93a-q1-application-questions/1543379?tisearch=e2e-sitesearch&keymatch=SN65LVDS93A%20AND%20VCCIO#1543379

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/636344/sn65lvds93a-4-7kohm-pull-up?tisearch=e2e-sitesearch&keymatch=SN65LVDS93A%2525252520AND%2525252520resistor#

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1104487/sn65lvds93-sn65lvds93bdgg?tisearch=e2e-sitesearch&keymatch=iovcc%20resistors#

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1067987/sn65lvds93b-inquire-about-data-input-pullup/3957242?tisearch=e2e-sitesearch&keymatch=iovcc%2520resistors#3957242

Thanks,

William Yi

Interface

Interface forum

SN65LVDS93A: Res-network needed? - SN65LVDS93A