The SN74LS251D is an integrated circuit (IC) component that belongs to the LS (Low-power Schottky) family of logic devices. It is a multiplexer with 8-inputs and 1-output, designed to provide a flexible data routing solution. Here is an overview of its key features and functionalities:
1. Multiplexer: The primary function of the SN74LS251D is to selectively route one of the eight input channels to the single output channel. It achieves this through a set of control inputs (A, B, and C) that determine which input is connected to the output.
2. Low-power Schottky technology: The LS family of ICs, which includes the SN74LS251D, is known for its low power consumption and high-speed operation. This makes it suitable for various applications where power efficiency and speed are crucial.
3. TTL Compatibility: The SN74LS251D follows TTL (Transistor-Transistor Logic) voltage levels, which allows seamless interfacing with other TTL-compatible devices. The input and output voltage levels adhere to the standard TTL logic levels.
4. High Speed: With a propagation delay of only 11 nanoseconds (typical), the SN74LS251D ensures fast signal processing and minimal latency. This high-speed operation enhances the overall performance of the system in which it is used.
5. Wide Operating Voltage Range: The operating voltage range of the SN74LS251D is 4
