Hi,
We use a SN74AVC4T774PWR Level Translator circuit as shown in the image below and found the OUTPUT to be not working.
Before proceeding, the directions were checked and verified.
We found MISO line(Pin 5) to be not working and injected a square wave from a FG while checking Output on the B3(Pin 12).
There were no change in the Logic states at the output while input was at 1khz frequency with 3.2Vpp.
So I probed at the Pin 5 where the frequncy was injected and found the waveform to be like this.
Note :- FG probe and Scope Probe were kept at Pin 5 at the same time.
Below is the actual waveform directly from the FG to the Scope.
Note :- No intervention of circuit is involved here. Direct connection from FG to the Scope.
Below image shows the Set parameters from FG.
We see the Vpp getting reduced than the actual set Vpp. There seems to be an offset in the voltage levels as Well.
This could be the reason why we dont see any state in the OUTPUT. It always stay at HIGH Logic.
Regards,
Raj