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MC74ACT244N MC74ACT244NG MC74ACT245DT
MC74ACT245NG MC74ACT253D MC74ACT253DG
MC74ACT245NG/MC74ACT253D/MC74ACT253DG
MC74ACT244N/MC74ACT244NG/MC74ACT245DT
贴片直插MC74ACT245DT，MC74ACT241DW，MC74ACT241NG，4
贴片直插MC74ACT273DW，MC74ACT245NG，MC74ACT257MG，4
贴片直插MC74ACT245MG，MC74ACT244NG，MC74ACT244SD，4
贴片直插MC74ACT257DG，MC74ACT245SD，MC74ACT253NG，4
丝印MC74ACT257DG-MC74ACT253NG-MC74ACT253DG-MC74ACT245NG
MC74ACT245NG【IC TXRX NON-INVERT 5.5V 20DIP】
MC74ACT244NG MC74ACT245NG MC74ACT32NG MC74ACT540NG
