Which logic family is characterized by a multi-emitter transistor on the input?1 point

The logic family characterized by a multi-emitter transistor on the input is the TTL (Transistor-Transistor Logic) family, specifically the standard TTL. In TTL, the use of multi-emitter transistors allows multiple inputs to be connected to a single transistor. This configuration enables the transistor to act as a logical OR gate for the inputs connected to it.

The multi-emitter transistor functions effectively by allowing current to flow through any of its emitters when the corresponding input is activated. This simplifies the circuit design, reduces the number of components needed, and enhances the speed of logic operations. Additionally, TTL logic families are known for their robustness, speed, and compatibility with other logic families, which contributed significantly to their popularity in digital circuits during the late 20th century.