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SN74LS240MR2SN74LS240NE4SN74LS240NSRSN74LS241DWR
SN74LS240NSN74LS240JSN74LS241JSN74LS241N
SN74LS241NSRSN74LS242NSRSN74LS243NTISN74LS244DBR
SN74LS240SN74LS238SN74LS241SN74LS244
SN74LS241DWSN74LS242DRSN74LS243DRSN74LS243NS
SN74LS192JE11SN74LS19ADRG4SN74LS221DRG4SN74LS241DWG4
SN74LS238N251253257
接收器缓冲HD74LS241PSN74LS241N
科达德州上海SN74LS241N
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