The SN74LS157N is a commonly used integrated circuit (IC) component that belongs to the Texas Instruments' 74LS series family. It is a quad 2-input multiplexer, which means it can select one of four data inputs and send it to a single output based on the select inputs. Here is an overview of the key features of the SN74LS157N:
1. Multiplexer Function: The SN74LS157N consists of four identical 2-input multiplexers, where each multiplexer has four data input terminals (D0, D1, D2, and D3), two select input terminals (S0 and S1), and a single output terminal (Y). It allows the selection of one data input based on the select inputs.
2. Select Inputs: The two select inputs (S0 and S1) determine which data input is selected. By manipulating these inputs, one of the four data inputs can be connected to the output terminal. There are four possible combinations of select inputs, enabling various routing possibilities.
3. Output Enable: The SN74LS157N also features an active low output enable (OE) input. When OE is high, the outputs are disabled and remain in a high-impedance state (floating state). This allows for cascading multiple ICs or connecting the output to other devices without causing any interference
