IC 74LS257 Quad 2-Line to 1-Line Data Selector/Multiplexer
IC 74LS257 Quad 2-Line to 1-Line Data Selector/Multiplexer, Quad 2-Line to 1-Line Data Selector/Multiplexer This device is designed to multiplex signals from four-bit sources to four-output data lines in bus-organized systems. The 2-state outputs will not load the data lines when the output control pin is at a high-logic level. Specifications Three-state outputs interface directly with system bus Quad 2-input multiplexer Same pin assignments as SN54LS157, SN74LS157, SN54S157, SN74S157 Avg. propagation delay from data input: 9 ns Typical power dissipation: 55 mW Operation temp.: 0C to +70C Package: DIP-16