What is a 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.
How many and gates are required for a binary to hexadecimal decoder?
This will be so on for all the input combinations. From the above truth table, a 4-to-16 decoder can be implemented by using 4 NOT gates and 16 decoding NAND gates. For decoding all possible combinations of 4 bits input, sixteen (24 = 16) decoding gates are required.
Where is a decoder used?
The decoder is an electronic device that is used to convert a digital signal to an analog signal. It allows a single input line and produces multiple output lines. The decoders are used in many communication projects that are used to communicate between two devices.
What is 4-bit decoder?
A 4-bit decoder has 4 input lines and 16 output lines. That is 16 decoding gates are required to decode all possible combinations of four bits. For any given code on its input, one of the sixteen output becomes HIGH. Advertisements. Binary codes corresponding outputs and decoding functions are described in the table.
What is decoder with 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.
What is decoder explain with diagram?
Advertisements. 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.
What is decoder explain 3 to 8 line decoder with diagram?
A 3 to 8 decoder has three inputs (A,B,C) and eight outputs (DO to D7). Based on the 3 inputs one of the eight outputs is selected. From the truth table, it is seen that only one of eight outputs (DO to D7) is selected based on three select inputs.
What is the difference between 2 to 4 decoder and 3 to 8 decoder?
3 to 8 Decoder We know that 2 to 4 Decoder has two inputs, A1 & A0 and four outputs, Y3 to Y0. Whereas, 3 to 8 Decoder has three inputs A2, A1 & A0 and eight outputs, Y7 to Y0.
What is decoder of ten decoder?
These decoders accept four active HIGH BCD inputs and provide 10 mutually exclusive active LOW outputs. The active LOW outputs facilitate addressing other MSI circuits with active LOW input enables. They are pin compatible with low power Schottky TTL (LSTTL).
What is decoder with example?
A decoder is a circuit which has n inputs and 2n outputs, and outputs 1 on the wire corresponding to the binary number represented by the inputs. For example, a 2-4 decoder might be drawn like this: and its truth table (again, really four truth tables, one for each output) is: i1. i0.
What is decoder and encoder?
Encoder circuit basically converts the applied information signal into a coded digital bit stream. Decoder performs reverse operation and recovers the original information signal from the coded bits. 2. In case of encoder, the applied signal is the active signal input.
What is decoder explain?
A decoder is a device that generates the original signal as output from the coded input signal and converts n lines of input into 2n lines of output. An AND gate can be used as the basic decoding element because it produces a high output only when all inputs are high.
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 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 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 many inputs and outputs are there in 3-8 line decoder?
In 3 to 8 line decoder, it includes three inputs and eight outputs. Here the inputs are represented through A, B & C whereas the outputs are represented through D0, D1, D2…D7. The selection of 8 outputs can be done based on the three inputs. So, the truth table of this 3 line to 8 line decoder is shown below.