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SN74LS646NT/SN74LS648NT/SN74LS652DW
SN74LS648DW【IC TXRX INVERT 5.25V 24SOIC】
SN74LS646NT SN74LS648NT SN74LS652DW
逻辑芯片SN74LS648DW SN74LS648 sn74ls648dw SOP-24