SN74LS641-1DWR 74LVTH16240MTDX SN74BCT623NSR SN74ALVTH16244VR 74LVC1G07GS,132 SN74ABT640DBR SN74LV540ADGVR SN74ALVCHR162245DL 74LVC16827APAG8 74LVTH16244MEA SN74LVC1G07YEAR 74ALVTH16244GRG4 74AUP1G07FS3-7 SN74ABT623DBR SN74LVC1G07DBVTE4 SN74ABT16240ADGVR SN74ALVCH16973DGGR 74LVTH16244MEAX SN74LVCH16543AGQLR 74ALVTH16244VRE4