ECG749

ECG749: Dual 2-Line to 1-Line Data Selector/Multiplexer with 3-State Outputs belonging to the standard 7400-series logic family and packaged in a 16-pin dual-in-line layout. It functions by intercepting two separate 2-bit binary data streams and selectively channeling one of those streams to the outputs based on a shared select pin, using high-impedance 3-state logic to isolate data lines. (Industry Exact Equals: Philips ECG749, NTE749, Texas Instruments SN74LS257AN, Fairchild 74LS257PC, National Semiconductor DM74LS257AN, Motorola MC74LS257P).