新MC74LS00DR2 SN74ALS534N TC74HC138AF SN74ALS257N T

SN74AS240AN SN74AS244AN SN74S244N SN74HC682N SN74ALS534AN

SN74ACT533N SN74ACT534N SN74ACT563N CD74HC541E SN74F241N

原装SN74LS71N HD74HC534P M62393P W48S67-71H

KS5313Q B38242-LS86C-P810 SN74HC534N SN74AHC574DWR原装

原装TC74HC375P SN74LS171N MB74LS33 74F534PC

74HC534AP MC74HC534N SN74HC534N M74HC534B1 DIP20进口原装