The 7450 is a two-input multiplexer/demultiplexer TTL (Transistor-Transistor Logic) integrated circuit (IC). It is specifically a 16-pin, 14-Transistor device with two data inputs, two select inputs, and four output lines. The device is logic level compatible, meaning it works with both 3V and 5V logic levels. The select inputs allow for various data routing configurations, and the four output lines allows for either demultiplexing or multiplexing of the data lines. In terms of applications, the 7450 IC can be used as an address decoder or data selector, or to feed data from a common input line to four separate output lines.