Inputs should not be pushed more than 0.5V above VDD or below VEE.
For input voltage level specifications for control inputs, see VIH and VIL in Electrical Characteristics.
Recommended Output Conditions:
Outputs should not be pulled above VDD or below VEE.
Input or output current consideration:
The CD405xB series of parts do not have internal current drive circuitry and thus cannot sink or source current. Any current will be passed through the device.