2028589_en-US

PCA9617 waveform

This circuit works fine with the PCA9600, but to reduce costs, I modified the board to use a PCA9617 and checked the waveform.
Looking at the clock waveform, there is no particular distortion,
so there doesn't seem to be a problem, but at the point where the data waveform is outputting Low,
I observed a waveform that was pulled High at the falling edge of the clock.

I wonder if this is due to crosstalk between the clock and data (there is no problem when the PCA9600DPZ is installed),
or is it an effect of modifying the board pattern (pattern cutting/cable soldering)?
I would appreciate your opinions.

Re: PCA9617 waveform

HI yuji0935

I think it's an effect of modifying the board pattern (pattern cutting/cable soldering)about this glitch.

Thanks!