Atari Jaguar Controller Port Line Driver (74HC244)

If you are having issues with groups of buttons on your Atari Jaguar, such as C, 8, 5, 2 and 0 all not working at the same time (usually groups of 5 to 8 buttons) then it is typically these Line Drivers or the U18 flip flop (we sell that chip also).

There are 3 of this line driver handling various different button sets for both ports, and they are labelled U20, U21 and U25. If one has failed, we recommend swapping all three at the same time.