【Fairchild Semiconductor】DM74LS503N,寄存器 8-Bit Succ App Reg
【Fairchild Semiconductor】DM74LS51M,门（与/非与/或/非或） 8-Bit Succ App Reg
【Fairchild Semiconductor】DM74LS51MX,门（与/非与/或/非或） 8-Bit Succ App Reg
【Fairchild Semiconductor】DM74LS51N,门（与/非与/或/非或） Dual AND-OR Gate
【Fairchild Semiconductor】DM74LS533N,闭锁 Octal Trans Latch
【Fairchild Semiconductor】DM74LS533WM,闭锁 DISC BY MFG 7/03
【Fairchild Semiconductor】DM74LS533WMX,闭锁 Octal Trans Latch
【Fairchild Semiconductor】DM74LS534N,触发器 Oct D-Type Flip-Flop
