The adg5204 is a complementary metal oxide semiconductor cmos analog. Multiplexers, 2 x 1, 4 x 1, 8 x 1, multiplexers, shannon theorem. For example, an 8to1 multiplexer can be made with two 4to1 and one 2to1 multiplexers. Multiplexer is a device that has multiple inputs and a single line output. Assuming that the analogtodigital converter chosen has a fast enough sample rate, multiplexing the three streams into a single adc is generally more economi. Sn74lv4052aq1 dual 4channel analog multiplexers and. The multiplexer component implements a 216 input mux.
Design and implementation of boolean functions using. Hi again here are the instructions to the second problem that i am wondering about. In electronics, a multiplexer or mux is a device that. The figure below shows the block diagram of a 4to1 multiplexer in which the multiplexer decodes the input through select line. The 4 to1 multiplexer has 4 input bit, 2 control bits, and 1 output bit.
The multiplexer used for digital applications, also called digital multiplexer, is a circuit with many input but only one output. Understanding how to implement functions using multiplexers. The reverse of the digital demultiplexer is the digital multiplexer. This feature has excellent value in automotive applications where voltages in excess of normal supply voltages are common. Following figure shows the general idea of a multiplexer with n input signal, m control signals and one output signal. Chapter 7 multiplexing techniques temple university. Spring 2011 ece 331 digital system design 3 multiplexers a multiplexer has 2n data inputs n control inputs 1 output a multiplexer routes or connects the selected data input to the.
Each multiplexer has four independent inputsoutputs ny0 to ny3 and a common inputoutput. Multiplexer and demultiplexer circuit diagrams and. The circuit diagram of 4x1 multiplexer is shown in the following figure. Ad8184 700 mhz, 5 ma 4to1 video multiplexer analog devices. By applying control signals, we can steer any input. The max4704 features breakbeforemake switching action with a ton60ns and.
The 4x1 multiplexer comprises 4input bits, 1 output bit, and 2 control bits. Implement a boolean function using 4 to 1 multiplexer. Introduction digital electronics or digital electronic circuits are electronics that handle digital signals discrete. You need a combinational logic with 16 input pins, 4 select lines and one output. Package type package drawing pins package qty eco plan 2. Multiplexer wikipedia multiplexer an overview sciencedirect topics multiplexer and demultiplexer programs of vhdl using an 8 1 multiplexer to implement a 4 input logical function. Multiplexer and demultiplexer circuits and apllications. Pdf multiplexers demultiplexers fajar widiawan academia. Multiplexer handle two type of data that is analog and digital. A digital multiplexer mux selects binary information from one. Few types of multiplexer are 2to1, 4to1, 8to1, 16to1 multiplexer. High voltage, latchup proof, 4channel multiplexer adg5204.
Multiplexer and demultiplexer what is a multiplexer and demultiplexer. The 74lv4052 is a dual 4channel analog mult iplexer demultiplexer with a common select logic. To keep the number of components required to a minimum, it is suggested that you use 2to1 muxs. Ee4512 analog and digital communications chapter 7 the tdm. The block diagram of 1x8 demultiplexer is shown in the following figure. A 4to1 multiplexer here is a block diagram and abbreviated truth table for a 4to1 mux, which directs one of four different inputs to the single output line. The four input bits are namely 0, d1, d2 and d3, respectively. Standard demultiplexer ic packages available are the ttl 74ls8 1 to 8output demultiplexer, the ttl 74ls9 dual 1to4 output demultiplexer or the cmos cd4514 1to16 output. A digital device capable of selecting one input out of its multiple input lines and forwarding it on a common output line is called a multiplexer. We can implement 1x8 demultiplexer using lower order multiplexers easily by considering the above truth table. The two 4to1 multiplexer outputs are fed into the 2to1 with the selector pins on the 4to1s put in.
It is a combinational circuit which have many data inputs and single output depending on control or select inputs. Digital multiplexers groupsgroup 1 digital multiplexers are divided into two major groups 1. If we have four inputs and we want to select a single one then we can use fourtoone 4. It is possible to make simple multiplexer circuits from standard and and or gates as we have seen above, but commonly multiplexersdata selectors are available as standard i. One group is used to take relatively low bitrate data streams originating from computers and. Multiplexing and multiplexer multiplexer implementation. An example to implement a boolean function if minimal and dont care terms are given using mux. The reverse of the digital multiplexer is the digital demultiplexer. By applying control signals, we can steer any input to the output.
Construct a 4to1 mux if you are in a classroom setting, and each lab group of students has constructed a 2to1 mux, you might find it interesting, challenging, and fun to connect three lab group 2to1 muxs together into a 4to1 mux. The data inputs of upper 4x1 multiplexer are i 7 to i 4 and the data inputs of lower 4x1 multiplexer are i 3 to i 0. The onestop guide for understanding digital multiplexer and demultiplexer circuit design, truth tables, cascading, working, applications and other faqs. We start with the simplest of digital multiplexersa 2to1 mux. A 4 to 1 multiplexer uses 2 select lines s0, s1 to determine. For n input lines, log n base2 selection lines, or we can.
The multiplexer component is used to select 1 of n inputs while the demultiplexer component is used to route 1 signal to n outputs. Cd74hc4051ep analog multiplexer and demultiplexer 1 features 3 description the cd74hc4051ep is a digitally controlled analog 1 controlled baseline switch that uses silicon. The 4to1 multiplexer has 4 input bit, 2 control bits, and 1 output bit. A multiplexers mux is a device that allows digital information from several sources to be. A combinational circuit is specified by the following boolean. And to control which input should be selected out of these 4, we need 2 selection lines.