The SN74LS155ADR is an integrated circuit component that belongs to the 74LS series of logic gates. It is a 4-line to 16-line decoder/demultiplexer. This IC has several key features that make it useful in digital electronics.
1. Decoder Function: The primary function of the SN74LS155ADR is decoding. It takes a 4-bit binary input and activates one of its 16 output lines based on the input code. This allows it to select and activate a particular output line corresponding to the input code, making it ideal for addressing various peripheral devices in a digital system.
2. Demultiplexer Function: While the primary function is decoding, the SN74LS155ADR can also function as a demultiplexer. In this mode, it takes a single input and conditions the output lines according to the input signal. This allows it to route data from a single input line to any one of the 16 output lines, based on the input condition.
3. Active LOW Outputs: The 74LS series components typically have Active LOW outputs. It means that when a particular output line is activated, it gets pulled to a logic LOW state, while the inactive output lines remain at a logic HIGH state. This feature ensures compatibility with other LS series ICs and simplifies interfacing.
4. Schottky TTL Technology: The SN74LS155ADR is built using Schottky transistor-transistor logic (TTL) technology
