SN74LVC2T45: Output oscillation issue

Please specify the voltages at all control pins, and show an oscilloscope trace of both input and output for this channel.

Hello,

Similar to Clemens, can you please attach schematics and provide more detail (Input/Output) on the waveform. Thanks.

Regards,

Josh

Would you see attached file for schematic diagram?

The DIR input is referenced to VCCA; 3.3 V is not a valid signal level.

It is likely that the signal at pin 3 does not have a valid voltage either. (Please show the oscilloscope trace.) What is the purpose of the biasing circuit? Is this actually a digital signal?

 DIR input : I changed to 5Vpp signal. However, this oscillation issue still appered,
Would you see CH2 waveform of attached picture.



>What is the purpose of the biasing circuit? Is this actually a digital signal?
Based on requirement of Master device, this pull-up.down are mounted. This device detects function mode at power-up sequence by  detecting pull-up or pull- down. These lines are data and clock of SPI signal.

In the attached picture, CH2 is oscillating. If that is the input signal, then the translator works correctly.

>If that is the input signal, then the translator works correctly.
No. This pin that is captured this waveform was working as output port.

Plase include a trace of the input signal.