型号：HD74LS640-1
厂商：HITACHI[Hitachi Semiconductor]
大小：59.43 Kbytes
页数：共5页
功能：Octal Bus Transceivers(inverted 3-state outputs)
大小：6854.82 Kbytes
页数：共274页
功能：Ouadruple 2-input Positive NAND Gates
