39.11 ZCD Figure 39-163. Falling Edge Response Time vs. VDD Figure 39-164. Rising Edge Response Time vs. VDD Figure 39-165. Zero-Cross Detector Pin Voltage vs. Current (VDD = 5.5V) Figure 39-166. Zero-Cross Detector Pin Voltage vs. Current (VDD = 3.0V) Figure 39-167. Zero-Cross Detector Trip Voltage vs. VDD