MC74F399 QUAD 2-PORT REGISTER FAST SCHOTTKY
MC74F399D QUAD 2-PORT REGISTER
MC74F399DWR2 2-Input Digital Multiplexer
MC74F399J 2-Input Digital Multiplexer
MC74F399JD 2-Input Digital Multiplexer
MC74F399N QUAD 2-PORT REGISTER
MC74F399ND 2-Input Digital Multiplexer