NTB0104/NTB0102 power supply

[TAKE1]

Hello,

I have a question about the power supply of the Level translator NTB0104/NTB0102.
I would like to use NTB0104 as bi-directional Buffer of the SPI communication line.
In that case, can I use the power supply of NTB0104 VCCA/VCCB in the same voltage?
e.g. VCC(A)=VCC(B)=3.3v

Thanks for your support.

[guoweisun]

It can't work as buffer,please follow link for buffer selection:

I²C-Bus Repeaters/Hubs/Extenders | 1 MHz up to 540 pF | NXP Semiconductors

[guoweisun]

If the voltages are equal why do you use this level shifter?

[TAKE1]

Hello

I am thinking about the following connection.

Arduino DUE(3.3v SPI) --->
+------ Buffer(NTB0104) --- 3.3v SPI Device
+------ LevelShifter(NTB0104) --- 5v SPI Device
+------ LevelShfter(NTB0104) --- 5v SPI Device

*Each device is away about 20cm.

Buffer is necessary for ArduinoDUE because a SPI interface is weaker than ArduinoUNO. and I want to take the system which reduced the kinds of a device to use.

Thanks.

[guoweisun]

Can you use the PCA9519 for replace!