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SN74LS161DR DM74LS161M LS161A SOP16 逆变器逻辑芯片74LS161ADR
DM74ALS161BN(LS162BN LS163BN LS165N LS169BN LS175M
保DM74LS132N DM74LS138M DM74LS161AN DM74LS249N原
新M5M2167S-55 MM74HC161MX DM74F543SPC SN74LS86NSR R
新SI9936DY_NL DM74LS161AN NR6012T220M NR6012T5R3M R