Hello! apology for the late response, I was working on another project and I didn't check my email.
- What is different about the two breadboards? If you have a working breadboard, measure or scope the signals around the device and compare them against the non-working breadboard.
One is just bigger, I tried moving the IC back to the breadboard where it worked but I still have the same problem.
- Have you confirmed the VCC power up ramp does not violate the absolute maximum ratings?
Not sure what you mean by this, are you talking about the inputs of the IC or the supplies?
- What value pulldown resistor did you place on the inputs?
I tried 1k and 10k
- Do you have a good thermal connection on your breadboard?
Are you referring to the connections? If so yes, some breadboards are new while the others I still use for other projects
