DM74LS251
FAIRCHILD
19960
NA
onsemi(安森美)
7350
SOP16
onsemi(安森美)
1476
SO16EIAJ
Freescale(飞思卡尔)
60000
FCS
1990
FSC
2065
DIP16
NSC
80000
onsemi(安森美)
6000
SOIC16
FCS
1900
NSC
8888
原装原封
NS
6521
DIP14
ONSEMI
9000
NA
NAT
19889
SOP/DIP
FAIRCHILD/仙童
50000
DIP16
FAIRCILD
8000
DIP14