SN74HC393DR
SN74HC393DRE4
SN74HC393DRG4
SN74HC393DT
SN74HC393DTE4
SN74HC393DTG4
SN74HC393N
SN74HC393NE4
SN74HC393NS
SN74HC393NSE4
19129491934(手机优先微信同号)