SN75DP130: Noise immunity of HPD_SNK and RSTN pin

S.Satoshi

Part Number: SN75DP130

Hi,

Please let me ask about the noise immunity of HPD_SNK and RSTN pin. I'd like to know if HPD_SNK and RSTN pin has noise protection circuit internally, for example integrated equivalent RC filter or has deglitch time to ignore short duration pulse.

Best Regards,

Satoshi

over 6 years ago

0 David (ASIC) Liu over 6 years ago

TI__Guru**** 177706 points

Satoshi-san

HDP_SNK has de-bounce, but not the RSTn pin.

Thanks
David

0 S.Satoshi over 6 years ago in reply to David (ASIC) Liu

Guru 21685 points

Hi David,

Thank you for your quick response. Regarding de-bounce of HDP_SNK, do you mean that the de-bounce of HDP_SNK is tT(HPD) in datasheet?

Best Regards,

Satoshi

0 David (ASIC) Liu over 6 years ago in reply to S.Satoshi

TI__Guru**** 177706 points

Satoshi-san

No, the de-bounce on HPD must distinguish between HPD and HPD_IRQ, HPD_IRQ pulse is 0.5 to 1ms, so de-bounce time is greater than 1ms.

Thanks
David

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SN75DP130: Noise immunity of HPD_SNK and RSTN pin