Bevat 6x inverter (Hex Schmitt Trigger?)

IN  1  1-+-V-+-14 VCC
OUT 1  2-|   |-13 IN  6
IN  2  3-|   |-12 OUT 6
OUT 2  4-|   |-11 IN  5
IN  3  5-|   |-10 OUT 5
OUT 3  6-|   |-9  IN  4
GND    7-+---+-8  OUT 4