Use full for 3.3V to 5V voltage level converter.The 74HC4050 provides six non-inverting buffers with a
modified input protection structure, which has no diode
connected to VCC. Input voltages of up to 15 V may
therefore be used. This feature enables the non-inverting
buffers to be used as logic level translators, which will
convert high level logic to low level logic, while operating
from a low voltage power supply. For example 15 V logic
(“4000B series”) can be converted down to 2 V logic.
The actual input switch level remains related to the VCCand is the same as mentioned in the family characteristics.