How many TTL input?

TTL (Transistor-Transistor Logic) inputs typically refer to the number of inputs that a TTL device, such as a logic gate or flip-flop, can handle. Common TTL logic gates often have 2 to 4 inputs, while more complex devices like multiplexers or encoders can have larger numbers of inputs, ranging from 4 to 16 or more. The specific number of TTL inputs depends on the type and design of the device in question.