Dm74ls153 dual 1of4 line data selectorsmultiplexers dm74ls153 dual 1of4 line data selectorsmultiplexers general description each of these data selectorsmultiplexers contains inverters and drivers to supply fully complementary, onchip, binary decoding data selection to the andorinvert gates. Dm7446a, dm5447adm7447a bcd to 7segment decodersdrivers. Although they appear similar, they certainly perform di. Dm7486 quad 2input exclusiveor gate physical dimensions inches millimeters unless otherwise noted 14lead plastic dualinline package pdip, jedec ms001, 0. Thus, this is all about 3 to 8 line decoder 74ls8 ic data sheet. I double checked it with the truth table and each value matched up so i am pretty sure i did it correctly. Pinning 74hc8 74hct8 a0 vcc a1 y0 a2 y1 e1 y2 e2 y3 e3 y4 y7 y5 gnd y6. The multiple input enables allow parallel expansion to a 1of24 decoder using just three ls8 devices or to a 1of32 decoder using four ls8s and one inverter. The main function of this ic is to decode otherwise demultiplex the applications. Fairchild reserves the right at any time without notice to change said circuitry and specifications. Interpret the datasheet for a 748 decoder and complete the following timing from ect 114 at devry university, san diego.
Bcd to 7segment decoder the sn5474ls48 is a bcd to 7segment decoder consisting of nand gates, input buf fers and seven andorinvert gates. G ra p h ic e d ito r for schem atic designs, background. Interpret the datasheet for a 748 decoder and complete. Onsemi, alldatasheet, datasheet, datasheet search site for electronic components and. The device has two independent decoders, each accepting two inputs and providing four mutually exclusive active low outputs. The ls8features three enable inputs, two active low e1, e2 and datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. The device features three enable inputs e1, e2 and e3. Onsemi low power schottky,alldatasheet, datasheet, datasheet search site for electronic components. Interpret the datasheet for the 748 demultiplexer and complete the following timing diagram. With the use of a demultiplexer, the binary data can be bypassed to one of its many output data lines. This multiple enable function allows easy parallel ex pansion of the device to. Dm7446a, dm5447adm7447a bcd to 7segment decodersdrivers physical dimensions inches millimeters continued 16lead molded dualinline package n order number dm7446an or dm7447an ns package number n16e. Ti defines rohs to mean semiconductor products that are compliant with the current eu rohs requirements for all 10 rohs substances, including the requirement that rohs substance do not exceed 0.
Seven nand gates and one driver are connected in pairs to make bcd data and its complement available to the seven decoding andorinvert gates. The sn5474ls48 is a bcd to 7segment decoder consisting of nand gates, input buf fers and seven andorinvert gates. This article discusses an overview of 74ls8 ic 3 to 8 line decoder, pin configuration, features. The lsttlmsi sn5474ls8 is a high speed 1of8 decoder. Fairchild, alldatasheet, datasheet, datasheet search site for electronic components and. The ls151 can be used as a universal function generator to generate any logic function of four variables. All of the circuits have full rippleblanking inputoutput controls and a lamp test input. Each decoder has an active low enable input which can be used as a data input for a 4output demultiplexer. Every output will be high unless e1 and e2 are low and e3 is high. 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. Sn74ls8n texas instruments datasheet and cad model. Thus the operation of 8 to 3 line encoder and 3 to 8 decoder using ic 748, 74148 truth tables are verified. Fairchild decoderdemultiplexer,alldatasheet, datasheet, datasheet search site for electronic.
An example of a 2to4 line decoder along with its truth table is given as. Where designed to be soldered at high temperatures, rohs products are. A typical example of a 3to8 line decoderdemultiplexer, the 748, is shown in figure 5. This guide is intended for people new to electronics like myself who wants to understand how 238 decoders demultiplexers work. It decodes four binary weighted address inputs a0 to a3 to sixteen mutually exclusive outputs y0 to y15. A demultiplexer performs the opposite function of a multiplexer, i. Fouroutput demultiplexer truth table select 1 select0, multiplexer digital. Check with the manufacturers datasheet for uptodate information. Where designed to be soldered at high temperatures, rohs products are suitable for use. This can be made much smaller than a discrete circuit made from independent. Pricing and availability on millions of electronic components from digikey electronics. The lsttlmsi sn5474ls8 is a high speed 1of8 decoder demultiplexer.
These are often used in ledcube projects and hopefully this simple exercise will illustrate how they work. Sn74ls8n texas instruments integrated circuits ics. Not more than one output should be shorted at a time, nor for more than 1 second. As inverse to the mux, demux is a onetomany circuit. Decoderdemultiplexer, 748 datasheet, 748 circuit, 748 data sheet. Dm74ls153 dual 1of4 line data selectorsmultiplexers. Select the part name and then you can download the datasheet in pdf. Dm7408 quad 2input and gates physical dimensions inches millimeters unless otherwise noted 14lead plastic dualinline package pdip, jedec ms001, 0. Typical parameters which may be provided in scillc data sheets andor specifications can and. Electrical electronics robotics technology download projects list. Segment identification and resultant displays are shown on a following page. Note bcd output from the ic 74148 as the input to 748. Here we will discuss ic 748 pin diagram, truth table, logical diagram, application.
The action or operation of a demultiplexer is opposite to that of the multiplexer. Compare pricing for texas instruments sn74ls8n across 31 distributors and discover alternative parts, cad models, technical specifications, datasheets, and more on octopart. Truth table of 1 to 16 demultiplexer of 74ls8 3 to 8 decoder 74ls8 truth table. Aug 28, 2019 datasheet ic 7432 pdf datasheet free download as pdf file. 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. How to design 5 to 32 decoders using 3 to 8 decoders quora. Download and unzip the quartus programming file entitled encoder to the folder c. Low power schottky, 748 datasheet, 748 circuit, 748 data sheet. Jameco will remove tariff surcharges for online orders on instock items learn more.
Interpret the datasheet for a 748 decoder and complete the. An integrated circuit or monolithic integrated circuit also referred to as an ic, a chip, or a microchip is a set of electronic circuits on one small plate chip of semiconductor material, normally silicon. This device is ideally suited for high speed bipolar memory chip select address decoding. Specify by appending the suffix letter x to the ordering code. Data is maintained by an independent source and accuracy is not guaranteed. This device is ideally suited for high speed bipolar memory chip select address. Dm7446a, dm5447adm7447a bcd to 7segment decodersdrivers physical dimensions inches millimeters continued 16lead molded dualinline package n order number dm7446an or dm7447an. In highperformance memory systems these decoders can be used to minimize. The enable inputs which are not used must be permanently tied to their appropri ate active high or active low state. The device features two input enable e0 and e1 inputs. A high on either of the input enables forces the outputs high. Demultiplexers are mainly used in boolean function generators and. Combinational logic decoders, encoders, multiplexers ppt download.
Multiplexers and demultiplexers are often confused with one another by students. These schottkyclamped circuits are designed to be used in highperformance memorydecoding or datarouting applications, requiring very short propagation delay times. Dual 1of4 decoder demultiplexer the lsttlmsi sn5474ls9 is a high speed dual 1of4 decoderdemultiplexer. It provides, in one package, the ability to select one bit of data from up to eight sources. Shown here is a multiplexer and a demultiplexer, each using a multipleposition switch symbol to indicate the selection functions inside the respective circuits. According to the 7447 datasheet the 7446a and 7447a ics feature activelow outputs designed for driving commonanode leds or incandescent indicators directly.
Every output will be low unless e1 and e2 are low and. Sn74ahc8pw texas instruments datasheet and cad model. Datasheet ic 7432 pdf datasheet free download as pdf file. Ti defines rohs to mean semiconductor products that are compliant with the current eu rohs requirements for all 10 rohs substances, including the requirement that rohs substance. Home 74ls8 hd74ls8p 3 to 8 decoderdemultiplexer ic. The device features three enable inputs e1 and e2 and e3.
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