The SN74LS251N is a multiplexer/demultiplexer IC component that is widely used in digital electronics. It provides a convenient way to select one of multiple input signals and route it to a common output. Here is an overview of the key features of the SN74LS251N:
1. Multiplexer/Demultiplexer: The SN74LS251N is a 1-of-8 multiplexer/demultiplexer, which means it has 8 data inputs (D0 to D7) that can be individually selected using the enable input signals (E1 and E2). The selected data input is then routed to the output (Y) pin.
2. Input Enable Logic: The IC has two enable (E1 and E2) inputs that are used to control the operation of the multiplexer/demultiplexer. Depending on the combination of enable inputs, the selected data input is transferred to the output or the output is disconnected from any input.
3. Output Enable: Another important feature of the SN74LS251N is the output enable (OE) input. When OE is low, the output is enabled and the selected data input appears at the output. Conversely, when OE is high, the output is disabled and the output pin becomes high impedance
