tm74k
sm74
rm74kv
qm74k
pm74
4v64
3v64kv
2v64k
1v64
0v64kv
f554kv
e554k
d554
c554kv
b554k
qe54k
pe54
oe54kv
ne54k
me54
1n44
0n44kv
zn44k
yn44
xn44kv