74LS157.pdf Quad 2-Line to 1-Line Data Selectors Multiplexers 54LS157 DM54LS157 DM74LS157 54LS158 DM54LS158 DM74LS158 June 1989 54LS157 DM54LS157 DM74LS157 54LS158 DM54LS158 DM74LS158 Quad 2-Line to 1-Line Data Selectors Multiplexers General Description Features These data selectors multiplexers conta……