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樧洙圛傌微樞狫獏澵千
DM74ALS573BWM LS576AWM LS576AWMX LS640AN LS645AN
HD74HC245P TC74HC245AP SN74ALS640AN 74LS640N
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SN74LS640N MC74HC138AN BL0932 TA8142AP V36ZA80 AQV454芯片
SN74LS640NMC74HC138ANBL0932
SN74ALS574ANSN74LS377NSN74LS
贴插SN74LS367AN-CD74HCT257E-CD74HCT541E-CD74HCT640E-B
原MC74HC374AN SN74LS640-1N SN75175N SN74LS74AN
贴片直插SN75146DG4 SN74S74NSR SN74LS640N SN74S113AN 5
