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SN74LS164NSRG4SN74LS191NSRG4SN74LS19ANSRG4SN74LS151NS
SN74LS175NE4SN74LS175NSRSN74LS191NE4SN74LS191NSR
SN74LS00ANSN74LN191NSN74LS00CBSN74LS00DB
SN74LS191NSSN74LS193AJSN74LS193DRSN74LS193NS
SN74LS191JSN74LS191DSN74LS191NSN74LS192J
可逆计数器SN74LS191NHD74LS191P
集成电路SN74LS165芯片175P
集成电路封装SN74LS169芯片
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