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SN75DP130 extenal resistor

Ryuuichi machida
Guru 12715 points
Other Parts Discussed in Thread: SN75DP130

Hi,

I would like you to confirm about EVM of SN75DP130.

According to schematic of SN75DP130 EVM, there is external pull down resistor(100k ohm) on "HPD_SNK" line.

However, in my understanding, this pin (HPD_SNK) also has internal pull down resistor (from 100kohm to 160kohm).

So, could you please confirm whether external pull down resistor MUST be needed for  "HPD_SNK" ?

(I think that this is not needed because this pin has internal resistor....)

Best Regards,

Machida