Does the inside of the RXD of TJA1055T have pull-up or pull-down applied?

[msjang]

If not, can I pull-up with 10KR resistor external?

[TomasVaverka]

Hi Min-Seok,

The RXD pin of the TJA1055T (5V version) provides a high-side and low-side driver, so no external pull-up resistor is needed.

Best regards,

Tomas