NTE74LS393,置换半导体 DUAL 4-BIT BIN CNTR
NTE74LS395A,置换半导体 CASCDE SHFT RG DIP16
NTE74LS396,置换半导体 OCT STOR REG DIP-16
NTE74LS40,置换半导体 DUAL 4-IN NAND BUFF
NTE74LS42,置换半导体 4TO10 BCD-DEC DECODR
NTE74LS445,置换半导体 BCD-DEC DCD/DRV O/C
NTE74LS47,置换半导体 BCD-TO-7 SEG DECODER
NTE74LS490,置换半导体 DUAL BCD CNTR DIP-16
