SN74LS423NSR SN74LVC1G123DCTT SN74LS423D CD74HC123PW SN74LS423DG4 CD74HC123M LTC6993CDCB-1#TRPBF CD74HC423M LTC6993CDCB-2#TRPBF SN74LS221N LTC6993CDCB-3#TRPBF SN74LS221D LTC6993CDCB-4#TRPBF LTC6993CDCB-2#TRMPBF LTC6993CS6-3#TRPBF LTC6993HS6-4#TRMPBF LTC6993CS6-4#TRPBF LTC6993HS6-2#WTRMPBF LTC6993CS6-1#TRMPBF LTC6993HS6-3#WTRMPBF