CMTI is the capability of the device to tolerate a rising or falling voltage step on the high voltage pins without coupling significant disturbance on the output signal. The device is specified for the maximum common-mode transition rate under which the output signal does not experience a disturbance greater than 200mV lasting longer than 2µs, as shown in Common-Mode Transient Response with a 50kV/ns common-mode input step. Here, a 1nF load capacitor is utilized along with a 5kΩ load resistor as the load conditions. Higher edge rates than the specified CMTI can be supported with sufficient blanking time after common-mode transitions.

Figure 6-2 Common-Mode Transient Response