Average operating current can be obtained by the following equation. Shown here is a multiplexer and a demultiplexer, each using a multipleposition switch symbol to indicate the selection functions inside the respective circuits. As a demultiplexer, data at input e is routed to either y0 or y1 depending on the state of a. Jul 23, 2015 the action or operation of a demultiplexer is opposite to that of the multiplexer. Although they appear similar, they certainly perform di. Each or these 4lineto16line decoders utilizes ttl circuitry to decode four binarycoded inputs into one of sixteen mutually exclusive outputs when both the strobe inputs g1 and g2 are low the demultiplexing function is performed by using. A 1to4 demultiplexer can easily be built from 1to2 demultiplexers as follows. Demultiplexer definition of demultiplexer by the free. Absolute maximum ratings noteif militaryaerospace specified devices are requiredplease contact the national semiconductor salesofficedistributors for availability and specificationssupply voltage7vinput voltage55voperating free air temperature rangedm54 and 54 datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and. Gate cmos the mc74hc238a is identical in pinout to the ls238.
This product has been released to the market and is available for purchase. The data distributor, known more commonly as a demultiplexer or demux for short, is the exact opposite of the multiplexer we saw in the previous tutorial the demultiplexer takes one single input data line and then switches it to any one of a number of individual output lines one at a time. Apr 18, 2016 within that kit of components was the usual assemblage of ttl chips. The difference between the two is very subtle, which in fact requires a thorough understanding of the concept of combinational logic circuits. Inputs were pulled high by default, and only pulled low when necessary, to save power. It has single input, a na selection lines and maximum of. Bandwidth analyzer pack analyzes hopbyhop performance onpremise, in hybrid networks, and in the cloud, and can help identify excessive bandwidth utilization or unexpected application traffic. Dual 2line to 4line decodersdemultiplexer datasheet rev.
This device buffers the data on input a and passes it to the outputs 1y true and 2y. Physical dimensions inches millimeters24lead ceramic dualinline package jorder number 54154dmqb or dm54154jns package number j24a24lead molded dualinline package norder number dm74154nns package number n24a5 datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. January 1995 3 philips semiconductors product speci. Check with the manufacturers datasheet for uptodate information. Sep 04, 2015 a multiplexer is a circuit that accept many input but give only one output. Demultiplexers combinational logic functions electronics. Multiplexer and demultiplexer latest free electronics. One of the main applications of the sn74als156 is as a dual 1line to 4line decoderdemultiplexer with individual strobes g\ and common binaryaddress inputs in a single 16pin package. However, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom. Multiplexer and demultiplexer a multiplexer is a circuit that accept many input but give only one output.
For detailed information see the relevant data sheet or data handbook. Demultiplexer is used to connect a single source to multiple destinations. Nsc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. With the use of a demultiplexer, the binary data can be bypassed to one of its many output data lines. Browse our computer products, electronic components, electronic kits. Sec is the owner of all rights, title, and interest in the 410 patent, entitled apparatus and method for controlling a demultiplexer and a multiplexer used for rate matching in a mobile communication system, which was duly and properly issued by the uspto on may 23, 2006. As inverse to the mux, demux is a onetomany circuit. Digital circuits demultiplexers demultiplexer is a combinational circuit that performs the reverse operation of multiplexer. Data is maintained by an independent source and accuracy is not guaranteed. A demultiplexer function exactly in the reverse of a.
M74hc154 1212 information furnished is believed to be accurate and reliable. September 1993 5 philips semiconductors product speci. Function tableinputsoutputsg1g2dcba0123456789 datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits. Generally multiplexer and demultiplexer are used together, because of the communication systems are bi directional. Copies the input on the west edge onto exactly one of the outputs on the east edge. Where designed to be soldered at high temperatures, rohs products are suitable for use in specified lead free processes. A demultiplexer function exactly in the reverse of a multiplexer, that is a demultiplexer accepts only one input and gives many outputs. The device has two independent decoders, each accepting two inputs and providing four mutuallyexclusive activelow outputs. Demultiplexers are mainly used in boolean function generators and. Nsc 4line to 16line decodersdemultiplexers,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Features and benefits hef4555b dd, vss, or another input. Physical dimensions inches millimeters continued24lead ceramic flat package worder number 54154fmqbns package number w24clife support policynationals products are not authorized for use as critical components in life supportdevices or systems without the express written approval of the president of nationalsemiconductor corporation as used herein1 life support devices or systems are. Demultiplexer article about demultiplexer by the free.
The multiplexer section channel b accepts two differential inputs and generates a single differential output. General description the 74lvc1g19 is a 1of2 decoderdemultiplexer with a common output enable. Every output will be low unless e1 and e2 are low and. Example of 1to16 demultiplexer is ic 74154 it has 1 input bit, 4 control bits and 16 output bit. Its circuit is or by expressing the circuit as shows that it could be two onebit 1to2 demultiplexers without changing its expected behavior. When the output enable e is low, the device passes data at input a to outputs y0 true and y1 complement. Download a free trial for realtime bandwidth monitoring, alerting, and more. Important notice texas instruments and its subsidiaries ti reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information. It decodes four binary weighted address inputs a0 to a3 to sixteen mutually exclusive outputs y0 to y15. Dual 2line to 4line decodersdemultiplexers datasheet. Msi general description the 74hchct154 are highspeed sigate cmos devices. Functional diagram 001aae751 1a0 decoder decoder 2 3 7 6 4 5 1a 1y0 1y1 1y2 1y3 1 1e 14 2a0 9 10 12 11 2a1 2y0 2y1 2y2 2y3 15 2e.
Multiplexers and demultiplexers are often confused with one another by students. The device inputs are compatible with standard cmos outputs. The device features two input enable e0 and e1 inputs. The device features three enable inputs e1 and e2 and e3. Tlf6548june 198954154dm54154dm741544line to 16line decodersdemultiplexersgeneral descriptioneach or these 4lineto16line decoders utilizes ttl circuitry to decode four binarycoded inputs into one of sixteenmutually exclusive outputs when both the strobe inputs g1and g2 are low the demultiplexing function is performedby using the 4 input lines to address the output line passing datasheet. As an example, a device that passes one set of two signals among four signals is a twobit 1to2 demultiplexer. M74hc154 512 ac electrical characteristics cl 50 pf, input tr tf 6ns capacitive characteristics 1 cpd is defined as the value of the ics internal equivalent capacitance which is calculated from the operating current consumption without load. General description the 74cbtlv3257 provides a quad 1of2 highspeed multiplexerdemultiplexer with common select s and output enable oe inputs. Ti may reference these types of products as pb free. For some products, newer alternatives may be available. A high on either of the input enables forces the outputs high. I dont remember the other ones, but i do remember the 74154. This chip is often used in demultiplexing applications, such as digital clocks, led matrices, and other graphical outputs.