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新SN74HC393ADB SN74HC166ANS SN74HC138APW R
全新SN74HC393DG4 SN74HC393DBR SN74HC393ANS SN74HC393ADB
贴插SN74LS109ANS SN74LAS245AN SN74HC125NSR SN74HC393ADB 5
贴片直插SN74HC4040DB,SN74HC373NSR,SN74HC393ADB,4