TCA9517A I2C pull up resister

na na78

Guru 16770 points

Other Parts Discussed in Thread: TCA9517A

Hi,

We are about to use TCA9517A for DDC in HDMI.

According to datasheet, I2C interface is pullled up by 10kohm resistor externally.

How to select the pull up resistor value?

Are there any criteria to select that value?

BestRegards

0 Siby James over 9 years ago

Hi,

Please refer to the following App note by TI:

Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs

This will help you calculate the appropriate pull-up resistor for your application.

Thanks,

Siby

Interface forum