I wrote a piece of code to interface with an IC that latched on to a wave form. I just resurrected this project and it's not working. Looking at the data I see I was latching on to a low 50us dip. This 50us dip is now a rise? The only thing that changed is the wiring I use to connect to this IC. So I'm wondering... Is it normal for an IC to revers its resting bias? Normally lo vs hi? Is there a common paradigm for this, like a pin that switches this behavior via a signal? For kicks I reversed the polarity but that didn't work nor did it hurt the IC.