I'd like to clarify the threshold level of VL. Since the data sheet says only at VL=5V, I'd like to know what the VL thresholds would be in case of VL=+VDD (ex. VL=+15V or +24V). I think the VIH shouldn't be 2.4V at VL=+24V.
Could you tell me what the thresholds of VIL and VIH at VL=+VDD (greater than +5V) is ?