Signal buffers, repeaters, and splitters are types of interface ICs (integrated circuits) that are used to amplify, extend, or distribute electronic signals. Signal buffers are used to amplify weak signals, allowing them to be transmitted over longer distances or through noisy environments without degrading the signal quality. Repeaters, on the other hand, are used to regenerate digital signals, allowing them to be transmitted over long distances without losing their integrity. Splitters, as their name implies, are used to divide a single input signal into multiple output signals, allowing the signal to be distributed to multiple devices or circuits. These types of ICs are commonly used in communication systems, data networks, and other electronic systems where signal integrity is important.