74LS86 Quad 2-Input XOR Gate IC: Pin, Datasheet pdf and Circuit Using 7486 Gate [FAQ]

74LS86 is a quadruple XOR gate IC. There are three types of gates AND, NOT, and NAND gates but with these gates, we can make multiple gates according to the requirement. Four independent positive logic 2-input exclusive OR (XOR) Gates are included in the 74LS86 IC package. It belongs to the 74XXYY IC family.

The 74LS86 IC supports a wide range of operating conditions and interfaces directly with CMOS, NMOS, and TTL devices. The IC's output is always in TTL, making it simple to interface with other TTL devices and microcontrollers.

74LS86 Pin

74LS86 Footprint

74LS86 3D Model

• IOL (Max): 16mA

• IOH (Max) -0.8mA

• Technology Family: LS

• VCC (Min): 4.75V

• VCC (Max): 5.25V

• No. of Channels: 4

• Inputs per channel: 2

• Input type: TTL-Compatible CMOS

• Output type: Push-Pull

• Features: High Speed (TPD 10-50ns)

• Data rate (Max): 35Mbps

• Rating: Catalog

• Operating temperature range: 0°C to 70°C

• XOR gates are used to implement binary addition in computers.

• Also used in Network equipment

• Televisions & Home entertainment systems

The 74LS86 is based on the basic three gates' simple logic. The 7486 is a logical circuit with two AND gates, two NOT gates, and one OR gate. At input pins, the NOT gate will be employed, and the input will be passed to the AND gates without being inverted. The output from both AND gates will then be fed into the OR gate, which will then get the final output. The following is a circuit diagram.

The OR gate only delivers a LOW output when both inputs are LOW; in this case, the NOT and AND gates are filtering the HIGH states before they reach the OR gates. The XOR gate circuit is created using this simple filtering method. Other combinations can be used to create the XOR gate, but each XOR gate will produce a different output depending on the inputs. A truth table can be used to represent the inputs and outcomes.

When any one of the two inputs in the matching gate is high, the output of each gate in the chip should be high, as shown in the truth table. If both inputs are high or LOW, the output of an EX-OR gate will be low.

We're going to use a 1K resistor to draw both gate inputs to the ground in this XOR gate design. The inputs are then connected to electricity through a button.

As a result, when the button is pressed, the gate's corresponding pin becomes high. So the truth table of the EX-OR gate may be realized with just two buttons. When one of the buttons is pressed, one of the gate's inputs will be high and the other will be low; the output should be high at this moment.

74LS86 Circuit

Because the chosen CHIP is a positive edge triggering one, these pull-down resistors are required. The circuit may produce unforeseen effects if the resistors are neglected.

The capacitors in this circuit are used to counteract the bouncing effect of buttons. Although the capacitors are not required, they may help the gate work more smoothly.

74LS86 Package Dimensions

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 74LS86 Datasheet pdf