Ic 74138 3 to 8 decoder

The ic 748 is available in the market with the name of 74ls8. When the application requires a large demultiplexer with more number of output pins, then we cannot implement by a single integrated circuit. Oct 26, 2018 74ls8 is a member from 74xxfamily of ttl logic gates. The sn74ls8n is a 3line to 8line decoderdemultiplexer, schottkyclamped ttl msi circuit is designed to be used in highperformance memory decoding or datarouting applications requiring very short propagation delay times. This proteus isis simulation is used to learn about the 74ls8 3. Competitive prices from the leading 3 to 8 line decoder demultiplexer 74lvc8 decoders encoders distributor. The design is also made for the chip to be used in highperformance memorydecoding or datarouting applications, requiring very short propagation delay times. The multiple input enables allow parallel ex pansion to a 1of24 decoder using just three ls8 devices or to a 1of32 decoder using four ls8s and one inverter. Motorola sn74ls8n ttl ic decoder demux 8 line plastic.

Aepsd1m32 aepsd1m32 748 decoder pin diagram of ic 748 ic 3 8 decoder 748 pin diagram application of ic 748 ic 748 pin diagram. In this project, we will show how to connect an 74hc238 3 to 8 decoder demultiplexer to an arduino micrcocontroller. Interfaces free delivery possible on eligible purchases. We take the popular 3 to 8 decoder integrated circuit 748. The outputs are actively in low state and are eight in number.

The decoder accepts three binary weighted inputs a0, a1, a2 and when enabled provides eight mutually exclusive active. This ic is mainly used in applications like memory decoding with high. Every output will be low unless e1 and e2 are low and. The 74hchct8 decoders accept three binary weighted address inputs and when enabled, provide 8 mutually exclusive active low outputs. This is a basic introduction and example of using the 74ls8 decoderdemultiplexer to convert from a 3 pin serial to an 8 pin parallel output. It is a shottkeyclamped ttl system and reduces the effective system delay considerably.

Buy 74hc8 ic is a 74xx series cmos digital ic can be used as a 3 to 8 bit decoder or an 8 output demultiplexer. How to connect a 74hc238 3 to 8 decoder to an arduino. Designing of 3 to 8 line decoder and demultiplexer using. The setup of this ic is accessible with 3inputs to 8output setup. 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. List of 7400 series ic included in altera quartus ii library. Proteus isis simulation 74ls8 decoder demux by nissi. The ls8, sn54s8, and sn74s8a decode one of eight lines dependent on the conditions at the three binary select inputs and the three enable inputs. This schottkyclamped circuit is designed to be used in highperformance memorydecoding or datarouting. Thus the operation of 8 to 3 line encoder and 3 to 8 decoder using ic 748, 74148 truth tables are verified. Recent listings manufacturer directory get instant insight into any electronic component. Two activelow and one activehigh enable inputs reduce the need for external gates or inverters when expanding. Retired 74ls8 ic, 3 to 8 decoderdemultiplexer, dil. A binary decoder is usually implemented as either a standalone integrated circuit ic or as part of a more complex ic.

The 748 decoder decodes oneofeight lines, based upon the conditions at the three binary select inputs and the three enable inputs. Demultiplexer adalah perangkat elektronik yang berfungsi untuk memilih salah satu data dari banyak data menggunakan suatu data input. The lsttlmsi sn5474ls8 is a high speed 1of8 decoder demultiplexer. This video discusses concepts about 748 decoder ic. Demultiplexer sering disebut sebagai perangkat dengan sedikit input dan banyak output ic ini cocok untuk pengguna mikrokontroler yang membutuhkan output. The lines of address ranging from a9 to a0 selects a. The internal circuit of this ic is made of highspeed schottky barrier diode. In this article, we discuss 3 to 8 line decoder and demultiplexer. The outputs of decoder m1, m2, m4 and m7 are applied to or gate as shown in figure to obtain the sum output. The lsttlmsi sn5474ls8 is a high speed 1of 8 decoder demultiplexer. This product is retired and we wont sell it anymore.

This is the reason decoderdemultiplexer chips are great additions to microcontrollers. The748 is a commercially available msi 3 to 8 decoder. Part number ic 418 size 2 piece certification rohs additional information. The 74ls8 decoder utilizes advanced silicongate ttl technology and are well suited to memory address decoding or data routing applications both circuits feature high noise immunity and low power consumption usually associated with ttl circuitry yet have speeds comparable to low power. At the entrance receives a 3bit number which multiplexes on an 8bit number the 7segment display. Using this decoderdemultiplexer, we can control 8 outputs with just 3 pins. Ic 74hc238 is used is used as decoder demultiplexer. In this project, we will show how to connect an 74hc238 3to8 decoderdemultiplexer to an arduino micrcocontroller. It has a detailed wiring with push buttons and led diodes. This means that the effective system delay introduced by the schottkyclamped system decoder is negligible.

Recommended operating conditions voltages are referenced to gnd ground 0 v symbol parameter conditions 74hc8 74hct8 min typ max min typ max unit. The decoder will decode the 3 bit address and generate a select line for one of the eight words corresponding to the input address. Designing of 3 to 8 line decoder and demultiplexer using ic. The truth table of a full adder is shown in table1. Ic 74hc238 is used is used as both decoder and demultiplexer demux. Refer my answer answer to how can i make 4x16 decoder using 2x4. The main function of this ic is to decode otherwise demultiplex the applications. Using this decoder demultiplexer, we can control 8 outputs with just 3 pins. The ic 74ls8 is a 3 to 8 line decoder integrated circuit from the 74xx family of transistortransistorlogicgates. Check with the manufacturers datasheet for up to date information. The device features three enable inputs e1 and e2 and. Hatton april 18 march 3 february 6 january 2 2008 106 december 1 november 2 october 14. Dm74als8 3 to 8 line decoderdemultiplexer dm74als8 3 to 8 line decoderdemultiplexer general description these schottkyclamped circuits are designed to be used in highperformance memorydecoding or datarouting applications, requiring very short propagation delay times. How to design 5 to 32 decoders using 3 to 8 decoders quora.

We have three input pins which are actively in high state and are classified as i 2, i 1 and i 0. These are often used in ledcube projects and hopefully this simple exercise will illustrate how they work. In highperformance memory systems these decoders can be used to minimize effects of system decoding. Geophone availability sirmadam, i am atul sharma, i have purchased some electronic goods from your company. With a 3bit storage latch, this ic combines the 3to8 decoder function. In the latter case the decoder may be synthesized by means of a hardware description language such as vhdl or verilog.

Competitive prices from the leading 3to8 line decoder demultiplexer 74lvc8 decoders encoders distributor. How to connect a 74hc238 3to8 decoder to an arduino. This is the reason decoder demultiplexer chips are great additions to microcontrollers. Ic 74hc238 decodes three binary address inputs a0, a1, a2 into eight outputs y0 to y7. The lsttlmsi sn54 74ls8 is a high speed 1of8 decoder demultiplexer. Not more than one output should be tested at a time, and the duration of. In highperformance memory systems these decoders can. This guide is intended for people new to electronics like myself who wants to understand how 238 decoders demultiplexers work. Buy 3 pcs of 74ls8 hd74ls8p 748 3 to 8 decoderdemultiplexer ic integrated circuit. Aepsd1m32 aepsd1m32 748 decoder pin diagram of ic 748 ic 38 decoder 748 pin diagram application of ic 748 ic 748 pin diagram. Note bcd output from the ic 74148 as the input to 748. The datasheet for the 748 explicitly says that the three enable inputs were a design decision that is intended to make it easy to use multiple 748 chips together to for a one out of 24 or one out of 32 decoder. The moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature.

Feb 28, 2019 the chip 748 gets selected when e 1 turns to 0, and e 2 is equal to 0, and e 3 is 1. The design is also made for the chip to be used in highperformance memorydecoding or datarouting applications, requiring very short propagation delay ti. All inputs are equipped with protection circuits against static discharge and transient excess voltage. The device features three enable inputs e1 and e2 and e3. Here we will discuss ic 748 pin diagram, truth table, logical diagram, application. The chip is designed for decoding or demultiplexing applications and comes with 3.