54F398LMQB from National Semiconductor is a D FLIP-FLOP, F/FAST SERIES TTL
54F398DM from National Semiconductor is a D FLIP-FLOP, F/FAST SERIES TTL
54F398DMQB from National Semiconductor is a D FLIP-FLOP, F/FAST SERIES TTL
JD54F398BSA from National Semiconductor is a 54F398 - QUAD 2-PORT REGISTER
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