Hi,
I just checked my 12A11 TFT from Seeedstudios also bought at Radioshack and it does in fact have a pair of HC245 chips in U3 and U4 positions on the board.
The 74HC245 is an Octal Bus Tranciever.
Here is the data sheet. datasheetcatalog.org/datashe … T245_2.pdf
Looks like the ones on the board are NPX.