TXB0104: Receive and transmit data in serial communication

rajesh beesetty

Part Number: TXB0104
Other Parts Discussed in Thread: SN74LVC1T45

Hello all,

I selected TXB0104 for receive and sending serial data communication. Logic transition is between 3.3V and 5V and vice versa, A device(Nexition display) sends and recieves data.

Could you please finalize the circuit I designed.

over 5 years ago

0 Emrys Maier over 5 years ago

TI__Guru* 97666 points

Hi Rajesh,

The TXB translator family shouldn't drive more than 70pF load, and typically a serial connection will have a much higher capacitance. This can result in oscillation and other problems.

Since your configuration has two unidirectional signals, why not use dedicated Tx and Rx translators? I would recommend looking at the SN74LVC1T45.

0 rajesh beesetty over 5 years ago in reply to Emrys Maier

Expert 1355 points

Hello Emrys

Thankyou for recommending the IC. Finally I'd like to know what value of capacitors to be connected at the VCCA and VCCB of SN74LVC1T45.

0 Emrys Maier over 5 years ago in reply to rajesh beesetty

TI__Guru* 97666 points

I would recommend using 0.1uF.

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TXB0104: Receive and transmit data in serial communication