The ls153 is a dual 4input multiplexer fabricated with low power, schottky barrier diode process for high speed. It provides, in one package, the ability to select one bit of data from up to eight sources. Design a circuitboard based on a 74154 4 line to 16 line decoder that will output a high henever the 4 bit binary is greater than 12 and output a low when it is less than 12 or equal to 12. If the installed ic is the max7412max7415 or max7422max7425, connect the positive terminal of the 3v supply to the vdd pad and the negative terminal of the supply to the gnd pad closest to the vdd pad see figure 1. The dm74ls8 decodes one of eight lines, based upon the conditions at the three binary select inputs and the three enable inputs. Chipmasterchipmaster compact professional ic list compact professional ic list digitaldigital ic tester software version 2.
Why is the output in the truth table inverted in a ic. Sn74154n texas instruments integrated circuits ics digikey. Dm74ls85 4bit magnitude comparator physical dimensions inches millimeters unless otherwise noted continued 16lead plastic dualinline package pdip, jedec ms001, 0. Cd54hc154, cd74hc154, cd54hct154, cd74hct154 datasheet. Each or these 4lineto16line decoders utilizes ttl circuit ry to decode four binarycoded inputs into one of sixteen mutually exclusive outputs when both the. The four buffered outputs present the selected data in the true noninverted form. Sn75155 line driver and receiver datasheet catalog. Nsc 4line to 16line decodersdemultiplexers,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The two 4input multiplexer circuits have individual active low enables ea, eb. It can select two bits of data from up to four sources under the control of the common select inputs s 0, s1.
Why is the output in the truth table inverted in a ic 74154. Limiting values 1 the input and output voltage ratings may be exceeded if the input and output current ratings are observed. Multiplexer quadrupling using the 74153 mux to generate a 16 row truth table the 74153 mux has two separate 2input4row muxs on it. As combination logic circuits are made up from individual logic. The dm74ls8 decodes oneofeight lines, based upon the conditions at the three binary select inputs and the three enable inputs. The activelow enable inputs allow cascading of demultiplexers over many bits. When either strobe input is high, all outputs are high. 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.
Nsc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Combinational logic circuit combination logic circuits are made up from basic logic and, or or not gates that are combined or connected together to produce more complicated switching circuits. Pricing and availability on millions of electronic components from digikey. So putting not gates between them is actually a mistake. Download national semiconductor corporation 74154 pdf datasheet file. If its not shown correctly, click here to open the file on a separate window.
It decodes four binary weighted address inputs a0 to a3 to sixteen mutually. 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. The device features independent enable inputs ne and common data select inputs s0 and s1. Four bits of data from two sources can be selected using the common select and enable inputs.
The content and s of the attached material are the property of its owner. To create a single 16row truth table, we can start by implementing parts of the table on different muxs, and then combining the two separate outputs into one output. Sn74154n texas instruments integrated circuits ics. Get your questions answered from other customers who own this product or have experience with it. Compare pricing for texas instruments sn74145n across 17 distributors and discover alternative parts, cad models, technical specifications, datasheets, and more on octopart.
The multiplexerdemultiplexer ic data transfer circuit wisc. 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 search, datasheets, datasheet search site for electronic components and semiconductors, integrated. Nsc, alldatasheet, datasheet, datasheet search site for. The 2to4 decoder has an active low output, and the enable of the 74154 is low too. Dm74ls155 dm74ls156 dual 2line to 4line decodersdemultiplexers dm74ls155 dm74ls156 dual 2line to 4line decodersdemultiplexers general description these ttl circuits feature dual 1lineto4line demultiplexers with individual strobes and common binaryaddress inputs in a single 16pin package. 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. The lowtohigh transition of ce should only take place while cp is high for predictable operation a low on mr overrides all other inputs and clears the register asynchronously, forcing all bit positions to a low stage. Packaging information orderable device status 1 package type package drawing pins package qty eco plan 2 leadball finish msl peak temp 3 59629558101qja active cdip j 24 1 tbd call ti n a for pkg type. N and pchannel 40v ds mosfet characteristics n and pchannel vertical dmos macro model subcircuit model level 3 mos apply for both linear and switching application accurate over the. The ls151 can be used as a universal function generator to generate any logic function of four variables. If you wanted to generate a 1 of 256 demultiplexer, you could use 16 74154s looking at the 4 least significant bits, while a single 74154 would look at the 4 most significant bits, with one ouput going to each of the other 16 74154s.
Dm54155dm74155 dual 2line to 4line decodersdemultiplexers. 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. In this animated activity, the learner examines how a 74150 ic multiplexer and a 74154 ic demultiplexer work together when their data select lines are connected to the same input devices. Why is the output in the truth table inverted in a ic 74154 used as a demux. Average operating current can be obtained by the following equation. 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. Pricing and availability on millions of electronic components from digikey electronics. National semiconductor corporation 74154 datasheet. The multiplexerdemultiplexer ic data transfer circuit. I told you to add the missing not gate for the last 74154 ic, but on second thought, you dont need the not gates at all. Sn74145n texas instruments datasheet and cad model.
Data selectorsmultiplexers data selectorsmultiplexers. If your question requires design or troubleshooting information, please email email protected for. Ic 74154 pin diagram datasheet, cross reference, circuit and application notes in pdf format. Function tableinputsoutputsg1g2dcba0123456789 datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits. Ti, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Quad 2input multiplexer the lsttlmsi sn5474ls157 is a high speed quad 2input multiplexer.
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