SN74LS27ML SN74LS27MEL SN74LS27M SN74LS27J SN74LS27DR2 SN74LS27DR SN74LS27D SN74LS279N SN74LS279M SN74LS279J SN74LS27N
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SN74LS27NCSN74LS27NE4SN74LS27NSSN74LS27NSRSN74LS28SN74LS280SN74LS280ANSSN74LS280DSN74LS280DRSN74LS280DR2SN74LS280FKSN74LS280JSN74LS280MSN74LS280NSN74LS280NDSN74LS280NDSSN74LS280NSSN74LS280NSRSN74LS283SN74LS283ANSSN74LS283D