SN74HC148NG4

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Logic - Signal Switches, Multiplexers, Decoders encompass a wide range of components designed to modify, switch and/or route logic signals and electric current. A popular component within this class is the SN74HC148NG4. The SN74HC148NG4 is an 8-line to 3-line Priority Encoder. It provides priority decoding of the binary inputs and has an active low enable input.

The application field of SN74HC148NG4 includes digital systems and applications, logic gates and circuit simplification, computer and logic board design, logic operations and data analysis, address decoding and many more. Its main logic and electric functions are to modify and prioritize logic signals, encode and decode binary signals, route and/or switch logic, generate and process signals, detect logic states and conditions, and detect and route current.

SN74HC148NG4 is based on NAND and NOR logic gates, and uses TTL (Transistor-Transistor Logic). It features an active-low enable input, three 8-bit Binary Inputs, three 3-bit Binary Outputs, an active-low Enable Input and an active-high Output Enable. All input pins of this component are logic level sensitive (inputs can be high or low) and it is designed to have minimal propagation delay.

The working principle of SN74HC148NG4 is based on the Sum-of-Products (SOP) Boolean expression. The component is designed to convert an 8-line input pattern into 3 binary outputs (A, B and C). When the Enable pin is at low operation state, the outputs are active (will be 0 or 1 depending on the input pattern). In active-high mode when the Enable pin is at a high logical state, the output will be 1, regardless of the logic states of the inputs. Each input has a priority, meaning that if multiple inputs are active, the priority encoding will determine the output. For example, if the inputs A and B are both active, the priority code will allow input A to be selected over input B.

In conclusion, SN74HC148NG4 is a logic component designed to encode binary signals, switch and prioritize logic signals, convert 8-line inputs into 3 bits of output and detect logic states and conditions. Its design and working principles are based on NAND and NOR logic gates, TTL and Sum-of-Products expressions.

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