What is decoder explain 3 to 8 line decoder?
What is decoder explain 3 to 8 line decoder?
3 to 8 line decoder demultiplexer is a combinational circuit that can be used as both a decoder and a demultiplexer. IC 74HC238 decodes three binary address inputs (A0, A1, A2) into eight outputs (Y0 to Y7). The device also has three Enable pins. The same combination is used as a demultiplexer.
What is a line decoder?
Decoder is a combinational circuit that has ‘n’ input lines and maximum of 2n output lines. One of these outputs will be active High based on the combination of inputs present, when the decoder is enabled. That means decoder detects a particular code.
How many enable lines are present in 74LS138 3/8 decoder?
The device takes 3 input data and converts it to 8-bit data. This chip is high used in decoding in memory to minimize the effect of decoding. The chip includes three enable pin, three input pins, and 8 output pins.
What is 74LS138 decoder?
The IC 74LS138 is a 3 to 8 line decoder integrated circuit from the 74xx family of transistor-transistor-logic-gates. The main function of this IC is to decode otherwise demultiplex the applications. The setup of this IC is accessible with 3-inputs to 8-output setup.
What is decoder explain with the circuit diagram?
A decoder is a circuit that changes a code into a set of signals. It is called a decoder because it does the reverse of encoding, but we will begin our study of encoders and decoders with decoders because they are simpler to design….Line Decoder.
| A | D1 | D0 |
|---|---|---|
| 0 | 0 | 1 |
| 1 | 1 | 0 |
What do you mean decoder?
Definition of decoder : one that decodes especially : an electronic device that converts signals from one form to another (as for unscrambling a television transmission)
How many 3 to 8 line decoders with an enable output are needed to construct a 6 to 64 line decoder without using any other logic gates?
How many 3-to-8 line decoders with an enable input are needed to construct a 6-to-64 line decoder without using any other logic gates? hence required decoders (from fig.) = 9 so ans is ( C) part.
What is the logical diagram of the 3×8 line decoder?
The logical diagram of the 3×8 line decoder is given below. 3 to 8 line Decoder has a memory of 8 stages. It is convenient to use an AND gate as the basic decoding element for the output because it produces a “HIGH” or logic “1” output only when all of its inputs are logic “1”.
How many stages are in a 3 to 8 line decoder?
3 to 8 line Decoder has a memory of 8 stages. It is convenient to use an AND gate as the basic decoding element for the output because it produces a “HIGH” or logic “1” output only when all of its inputs are logic “1”. You can clearly see the logic diagram is developed using the AND gates and the NOT gates.
How do you implement a 3 to 8 decoder circuit?
From the above Boolean expressions, the implementation of 3 to 8 decoder circuit can be done with the help of three NOT gates & 8-three input AND gates. In the above circuit, the three inputs can be decoded into 8 outputs, where every output represents one of the midterms of the three input variables.
How to implement higher-order decoders with the help of low-order decoders?
The following formula is used to implementation of higher-order decoders with the help of low order decoders For instance, when m1 = 4 & m2 = 8, then substitute these values in the above equation. We can get the required no. of decoders are 2. So, for implementing a single 3 to 8 decoder, we need two 2 lines to 4 line decoders.
