Which decoder is combined to get a 4 to 16 line decoder?
4 to 16 decoder circuit is obtained from two 3 to 8 decoder circuits or three 2 to 4 decoder circuits. When two 3 to 8 Decoder circuits are combined the enable pin acts as the input for both the decoders.
How many 2 to 4 decoders and AND gates are required to design a 3 to 8 decoder?
Therefore, we require two 2 to 4 decoders for implementing one 3 to 8 decoder.
How many 2/4 decoders will be used to design a 4/16 decoder with an enable input?
A 2-by-4 decoder has two input lines and four output lines, only one of which is logical 1 at any time. Which line is 1 depends on the input bit pair which can be 00,01,10,11. So take two such 2-by-4 decoders which give you four input lines.
How many inputs are needed for a 4 16 decoder?
Explanation: A binary decoder is a combinational logic circuit which decodes binary information from n-inputs to a maximum of 2n outputs. Here, number of outputs = 16. 16 = 24 = 2n. Thus, number of inputs is 4.
What is a 4/16 decoder?
The 74HC154; 74HCT154 is a 4-to-16 line decoder/demultiplexer. It decodes four binary weighted address inputs (A0 to A3) to sixteen mutually exclusive outputs (Y0 to Y15). The device features two input enable (E0 and E1) inputs. A HIGH on either of the input enables forces the outputs HIGH.
How many 16 input OR gates are required to build a 4/16 decoder?
A 4×16 decoder has 4 inputs and 16 outputs, with the outputs going high for the corresponding 4-bit input. Similar is the case of a 2×4 decoder except for its 2 inputs and 4 outputs.
What is binary to octal decoder?
A decoder circuit converts a binary code on the input to a single output representing the numeric value of the code. A binary-to-octal decoder converts 3 binary bits into a 1-of-8 output. Decoders can be designed with either active high outputs or active low outputs.
What is the size of the decoder if it has 4 inputs?
So for example, a decoder with 3 binary inputs ( n = 3 ), would produce a 3-to-8 line decoder (TTL 74138) and 4 inputs ( n = 4 ) would produce a 4-to-16 line decoder (TTL 74154) and so on.
Which of the following represents a number of output lines for a decoder with 4 input lines?
In a decoder, if the input lines are 4 then number of maximum output lines will be: 2. 16.
How many outputs does a 4/16 decoder have?
The 74HC4514; 74HCT4514 is a 4-to-16 line decoder/demultiplexer having four binary weighted address inputs (A0 to A3), with latches, a latch enable input (LE), an enable input (E) and 16 outputs (Q0 to Q15). When LE is HIGH, the selected output is determined by the data on An.
How many decoders are required to implement a single 3 to 8 decoder?
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. Here, the block diagram is shown below by using two 2 to 4 decoders. The parallel inputs like A2, A1 & A0 are given to 3 lines to 8 line decoder.
How many input lines does a 2-by-4 decoder have?
A 2 -by- 4 decoder has two input lines and four output lines, only one of which is logical 1 at any time. Which line is 1 depends on the input bit pair which can be 00, 01, 10, 11. So take two such 2 -by- 4 decoders which give you four input lines. Let the output lines be a 0, a 1, a 2, a 3 for one decoder and b 0, b 1, b 2, b 3 for the other.
How many gates and decoders are there in a 4×16 decoder?
Following the steps we took in the lecture, we are supposed to build a 4×16 decoder. So here taking k to be 4, k is even, so we will have 2 k so 2 4 = 16 AND gates & 2 decoders each of size 2 k / 2 so 2 2 = 4. So we have 16 AND gates & two 2×4 decoders.
How to connect two 3×8 decoders together?
the two squares are two 3×8 decoders with enable lines. the three selection lines of each decoders are connected together as common line (X,Y,Z), the enable lines are ACTIVE LOW, they are also connected together with a common line W, but the second one having a NOT gate connected within. So, there are now 4 selection inputs i.e W,X,Y,Z.
https://www.youtube.com/watch?v=Qcnmb7XuA8Y