Why does my 74AC04 not invert my 14.31818 MHz frequency?
How are you plugging this all together? On a proto plug board?

If so your problems could be related to this. Proto boards can cause a lot of problems when the frequency starts to get up there over a few megahertz. The problems relate to coupling between adjacent buss nodes and the larger than normal circuit capacitance that the buss tracks being to the party.