54157 DM54157 DM74157 Quad 2-Line to 1-Line Data S.
National Semiconductor
DM54157 - Quad 2-Line to 1-Line Data Selectors/Multiplexers
54157 DM54157 DM74157 Quad 2-Line to 1-Line Data Selectors Multiplexers June 1989 54157 DM54157 DM74157 Quad 2-Line to 1-Line Data Selectors Multipl.