So the and gate should be seeing 1s on both the a and b inputs, meaning that the output at pin 3 is delivering 5 volts. Laboratory manual digital systems and logic design. A logic and gate is a type of digital logic gate that has an output which is normally low 0 and only goes high 1 when all of its inputs are high 1. Realize the ex or gates using minimum number of nand gates. If an input pin to a gate is not connected to anything, it floats high, meaning the gate makes an assumption that there is a 1 on the pin. The output state of a logic and gate only returns low again when any of its inputs are low 0.
The 7400 series originated with ttl integrated circuits made by texas instruments. Ic 7408 quad 2input positive and gate jameco electronics. Buy ic 7408 quad 2input positive and gate toggle navigation jameco electronics customer care 1800831. Operating condition and characteristics also given here. However, commercial available and gate ics are only available in standard 2, 3, or 4input packages. Each gate is a three terminal device with 2 terminals for the input purpose and one is for the output purpose. Nov 15, 2015 just using ic s might not make a great project unless you have a microprocessor like 808586 or microcontroller to involve. Digital electronics tutorial about the logic and gate and the logic and gate truth table used in. Playing with boolean gates how electronic gates work. The and gate is a basic digital logic gate that implements logical conjunction it behaves.
Ic and gate 7408 datasheet, cross reference, circuit and application notes in pdf format. This ic has 14 pin dip configurations as shown in fig 2. Nand gate can be built using 4 mosfets 2nmos and 2pmos. There are four and gates in the chip and each gate have two inputs, hence the name. The following is a list of 7400series digital logic integrated circuits. Ic 7432 is a logic gate ic which consist of four or gates. Dm74ls32 quad 2input or gates package number w14b fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and fairchild reserves the right at any time without notice to change said circuitry and specifications. Ic 7408 datasheet, cross reference, circuit and application notes in pdf format. Pdf mailfax order pdf california resale certificate pdf. Non inverting gates are not as flexible, which is probably why theyre not as popular. Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and. Quad 2input positive and gate specifications the 7408 is a quad 2input and gates and contains four independent gates each of which performs the logic and function. Usually each ic package contains several individual gates.
Due to the popularity of these parts, other manufacturers released pintopin compatible logic devices which kept the 7400 sequence number as an aid to identification of compatible parts. In digital electronics, a gate is logic circuits with one output and one or inputs. Because of the popularity of these parts, they were secondsourced by other manufacturers who kept the 7400 sequence number as an aid to. This device contains four independent gates each of which. This enables the use of current limiting resistors to interface inputs to voltages in excess of. List of 7400 series integrated circuits 1 list of 7400 series integrated circuits the following is a list of 7400 series digital logic integrated circuits. Y output gate 1 3 a input gate 2 4 y output gate 2 5 a input gate 3. And 74ls08 pdf 74ls08 ic is a member of 74xxyy ic series. Quad nand gate, ic 7404 hex inverter, ic 7408 quad and gate and ic7402 quad nor gates. Fairchild does not assume any responsibility for use of any circuitry described, no circuit. Circuito integrado 7408 pdf dm quad 2input and gates. Dm7408 quad 2input and gates physical dimensions inches millimeters unless otherwise noted 14lead plastic dualinline package pdip, jedec ms001, 0.
Com datasheet search site for electronic components and semiconductors and other semiconductors. The sn7400 series originated with ttl integrated circuits made by texas instruments. The ic contains six independent gates each of which performs the logic invert download texas instruments datasheet no related posts. Oct 22, 2015 7408 datasheet motorola pdf, 7408 datasheet, 7408 pdf, 7408 pinout, 7408 data, 7408 circuit, ic, manual, substitute, parts, schematic, reference. The ic 7408 has total fourteen pins including ground and vcc. Hbm jesd22a114e exceeds 2000 v mm jesd22a115a exceeds 200 v. Here we are going to use 74ls32 chip for demonstration, this chip has 4 or gates in it. Dm7408 quad 2input and gates package number w14b fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and fairchild reserves the right at any time without notice to change said circuitry and specifications. For two bit addition sum will be 1, if only one input is 1xor operation. Photograph features six hex inverters with hivolt open collector outputs. To design and build bcdto 7 segment converter apparatus analoguedigital trainer kit ic type 7404 hex inverters ic type 7408 quadruple 2input and gates ic type 7432 quadruple 2input or gates. Note that if youd used a 7400 quad nand gate you could have used one gate as an inverter on the output, giving you the and function and the remaining two gates on the inputs. This gate is mainly used in applications where there is a need for mathematical calculations. Each pin and its purposes of 7408 ic are explained below.
Ic 7400, ic 7408, ic 7432, ic 7406, ic 7402, patch cards and ic trainer kit. Device has been announced but is not in production. Or gate is a digital logic gate, designed for arithmetic and logical operations. Nov 03, 2017 digital electronics circuit in breadboard. In order to implement the and gate on the hardware or on the bread board the 74ls08 ic is used. Features and benefits complies with jedec standard jesd7a input levels. Luggage security alarm project circuit using logic gates. What is a simple mini project using ics 7410, 7432, 7408. The and gate is a basic digital logic gate that implements logical conjunction it behaves according to the truth table to the right. Since each gate had two inputs, you must use two switches for each gate.
In other words for a logic and gate, any low input will give a. Adders and decoders objective to design and test adder circuits. The original 7400series integrated circuits were made by texas instruments with the prefix sn to create the name sn74xx. Approximately 10ma of current at 12 v is been deliver by the ic which can be trim down with the reduction of the power supply voltage. The and gate with inputs a and b and output c implements the logical expression c. You still only need one led for the one output of each gate. This device contains four independent gates each of which performs the logic and function.
The 7408 chip can be used for high speed and operations because of the less switching delays in the gates. Come prepared with circuit diagrams, writing materials and calculator. Ic gates are classified not only by their logic operation, but also the specific logiccircuit. The operation of these gates is to consider the diode as a simple switch, which is closed on when the voltage on one side the anode is higher than the other the cathode. The 7400 is a quad nand gate, the 7408 is a quad and gate, and the 7432 is a quad or gate. The ic 7408 belongs to a sort of logic gate chip, containing four independent 2input and gates each of which performs the logic and function. This is a quad 2 input and gate ic pin number description 1 a input gate 1 2 b input gate 1 3 y output gate 1 4 a input gate 2 5 b input gate 2 6 y output gate 2 7 ground 8 y output gate 3 9 b input gate 3 10 a input gate 3 11 y output gate 4 12 b input gate 4 a input gate 4 14 positive supply this. These four gate are connected internally as shown in below figure. These four gate are connected internally as shown in below pin diagram. Digital lab kit, single strand wires, breadboard, ttl ics. Here are some of the basic logic ic s well be using in class. Theory the basic logic gates are the building blocks of more complex logic circuits. Logic gates objective to get acquainted with the analogdigital training system.
A high output 1 results only if all the inputs to the and gate are high 1. Using a counter and led lights you can make a street signalling system for a fourway crossroad. Gate 7408 datasheet, cross reference, circuit and application notes in pdf format. Cd4071b quad 2input or gate cd4072b dual 4input or gate. Cd4071b quad 2input or gate cd4072b dual 4input or gate cd4075b triple 3input or gate cd4071b, cd4072b, and cd4075b or gates provide the system designer with direct implementation of the positivelogic or function and supplement the existing family of cmos gates. Now, connect the and gate with the inputs of a and b and other and gate in the same ic is given by the complement input of the a and b i. See the newest logic products from ti, download logic ic datasheets, application notes, order free samples, and use the quick search tool to easily find the best logic solution. The function can be extended to any number of inputs.
Get started with not gate ic 7400 series tutorials. Features and benefits lowpower dissipation complies with jedec standard no. To get acquainted with different standard integrated circuits ics. Sep 11, 2017 7408 ic is a quad 2input and gates and contains four independent gates each of which performs the logic and function. These logic gates perform the basic boolean functions, such as and, or, nand, nor, inversion, exclusiveor, exclusivenor. Ic 7408 datasheet and pinout logic gate chip electronic.
For the most part we do not need to concern ourselves with the actual circuitry inside each gate, only the interconnections between individual gates. Logic and gate tutorial with logic and gate truth table. The cd4071b, cd4072b, and cd4075b types are supplied in 14lead hermetic dual. The leader in high temperature semiconductor solutions cht 7408. Because of the popularity of these parts, they were secondsourced by. To understand formulation of boolean function and truth table for logic circuits. Here we are going to use ic 74ls09 for demonstration, this chip has 4 and gates in it.