C element wikipedia study of 16 to 1 line multiplexer demultiplexer design of combinational logic foundation of digital electronics and logic design pages 101 150 design of combinational logic. Asnt1011apqa is a low power and highspeed digital 16 to1 multiplexer mux serializer ic. We start with the simplest of digital multiplexersa 2to1 mux. In this, m selection lines are required to produce 2m possible output lines consider 2m n. Consider what happens when, instead of using a 16 to 1 multiplexer, we use an 8 to 1 mux. You need a combinational logic with 16 input pins, 4 select lines and one output. Multiplexers are also known as data n selector, parallel to serial convertor, many to one circuit, universal logic circuit.
You couldve easily found it on the internet if you searched. The figure below shows the block diagram of a demultiplexer or simply a demux. Diagram multiplekser secara umum ditunjukkan oleh gambar di bawah ini. Its characteristics can be described in the following simplified truth table. Pdf efficient qca exclusive or and multiplexer circuits based on. Multiplexer the basic idea of multiplexing is to transmit two or more analog messages or digital signals concurrently over a single communication channel, thus sharing what might be an. Few types of multiplexer are 2 to1, 4 to1, 8 to1, 16 to1 multiplexer. Few types of multiplexer are 2to1, 4to1, 8to1, 16to1 multiplexer. Ads1112 16bit analogtodigital converter with input. The value of the control inputs determines the data input that is selected.
Jumlah selektor dilihat dari banyaknya kanal input n. Adi switches and multiplexers are used in a wide and growing range of applications from industrial and instrumentation to medical, consu. Digital electronics 1 combinational logic circuits wiley. It decodes four binary weighted address inputs a0 to a3 to sixteen mutually exclusive outputs y0 to y15. Standard demultiplexer ic packages available are the ttl 74ls8 1 to 8output demultiplexer, the ttl 74ls9 dual 1 to4 output demultiplexer or the cmos cd4514 1 to 16 output demultiplexer. Few types of multiplexer are 2to1, 4to1, 8to1, 16to1. Mux memiliki kanal input lebih besar dari 1 minimal 2 atau kelipatan 2, dan hanya memiliki 1 kanal output. The device features two input enable e0 and e1 inputs.
A 2 to1 multiplexer has a boolean equation where and are the two inputs, is the. Implementation of boolean function using multiplexers. The selected line decides which ip is connected to the op, and also increases the amount of data that can be sent over an nw within a certain time. Since digital logic uses binary values, powers of 2 are used 4, 8, 16 to maximally control a number of inputs for the given number of selector inputs. Max336max337 16canneldal cannel loleaae cmos analo.
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. So, we require two 8x1 multiplexers in first stage in order to get the 16 data inputs. The max14661 is a serially controlled, dualchannel analog multiplexer allowing any of the 16 pins to be connected to either common pin simultaneously in any combination. If we choose to connect a, b, and c to the inputs of the multiplexer, then for each combination of a. We will see how to select one of the inputs and send it down the single output channel. If we have four inputs and we want to select a single one then we can use fourtoone 4. Examples of solved problems for chapter3,5,6,7,and8. Multiplexers a multiplexers mux is a combinational logic component that has several inputs and only one output. In this mux one selection line s is used to select one of 2 12. The reverse of the digital demultiplexer is the digital multiplexer. The main function of the ic is to multiplex 16 parallel data channels running at a bit rate of f bit.
Spring 2011 ece 301 digital electronics 3 multiplexers a multiplexer has 2n data inputs n control inputs 1 output a multiplexer routes or connects the selected data input to the output. It is a combinational digital circuit and generally called a data selector as well. Sn74lv4051aq1 8channel analog multiplexerdemultiplexer. A multiplexer can be designed with various inputs according to our needs. For digital application, they are built from standard logic gates. T here are two data inputs d0 and d1, and a select input called s. Both devices can be used as either a mux or a demux. By applying control signals, we can steer any input to the output. It is a combinational circuit which have many data inputs and single output depending on control or select inputs. Y3 12 i 1 input to mux y0 i 1 input to mux y1 14 i 1 input to mux y2 15 i 1 input to mux vcc 16 i device power input 1 these io descriptions represent the device when used as a multiplexer, when this device is operated as a demultiplexer pins y0y7 may be considered outputs o and the com pin may be considered inputs i. A 1 to 4 multiplexer uses 2 select lines s0, s1 to determine which one of the 4 outputs y0 y3 is routed from the input d. Similar to the process we saw above, you can design an 8 to 1 multiplexer using 2.
For n input lines, log n base2 selection lines, or we can say that for 2 n input lines, n selection lines are required. Digital multiplexer digital demultiplexer up to 16 channels general description the multiplexer component is used to select 1 of n inputs while the demultiplexer component is used to route 1 signal to n outputs. The switch features four digital select inputs s0, s1, s2 and s3, sixteen. Analog devices offers a comprehensive portfolio of switches and multiplexers covering single to multiple switch elements with various signal ranges in a variety of packages to best suit customer application needs. Since, each 8x1 multiplexer produces one output, we require a 2x1 multiplexer in second stage by considering the outputs of first stage as inputs and to produce the final output. Whereas, 16x1 multiplexer has 16 data inputs, 4 selection lines and one output. If we have 8 inputs we can design a multiplexer with 8 input lines, but the selection line should be. Multiplexer will be the same as the f entries in the truth table provided a, b, c, and d are connected to the multiplexer select inputs in the right order. The 16 channel max336 is designed to connect one of 16 inputs to a common output by control of a 4bit binary address.
The cd74hc4067 and cd74hct4067 devices are digitally controlled analog switches that utilize silicongate cmos technology to achieve operating speeds similar to lsttl, with the low power consumption of standard cmos integrated circuits. Multiplexing and multiplexer multiplexer implementation. The multiplexer routes one of its data inputs d0 or d1 to the output q, based on the value of s. Multiplexer and demultiplexer circuit diagrams and. Thus, a demultiplexer is a 1 ton device where as the multiplexer is an n to1 device. Try designing these using only multiplexers using similar logic to the one we saw above. Mux directs one of the inputs to its output line by using a control bit word selection line to its select lines. Following figure shows the general idea of a multiplexer with n input signal, m control signals and one output signal. The dual, 8channel max337 is designed to connect one of eight inputs to a common output by control of a 3bit binary address. It consists of 1 input line, n output lines and m select lines. The multiplexer used for digital applications, also called digital multiplexer, is a circuit with many input but only one output.
The adg3257 is a cmos bus switch comprised of four 2. A multiplexer or mux is a device that has many inputs and a single output. The multiplexer used for digital applications, also called digital multiplexer, is a circuit with many. Basics of analog multiplexers 1 tipl 2601 ti precision labs op amps created by abhijeet godbole, art kay presented by peggy liska. An example to implement a boolean function if minimal and dont care terms are given using mux. This device has fast switching speeds ton 25ns, toff20ns max, handles railtorail analog signals, and consumes. At dc and pga 1 100 db digital inputoutput logic level vih 0. 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 output. Basic circuit design and multiplexers howard huang. Another type of demultiplexer is the 24pin, 74ls154 which is a 4bit to 16 line demultiplexerdecoder. The max4734 is a low onresistance, lowvoltage, 4channel cmos analog multiplexer that operates from a single 1. Browse over 30,000 products, including electronic components, computer products, electronic kits and projects, robotics, power supplies and more.118 638 403 945 1195 1271 1091 10 1366 368 675 571 1077 1171 1347 186 1405 579 190 449 752 1404 472 446 1182 909 147 1267 1257 464 497 267 653 1101 1196 1035 733 584 961 40 917 1150 978