Current - Output High, Low:	400µA, 8mA
Base Part Number:	74LS86
Package / Case:	14-DIP (0.300", 7.62mm)
Supplier Device Package:	14-PDIP
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 70°C
Max Propagation Delay @ V, Max CL:	30ns @ 5V, 15pF
Logic Level - High:	2V
Logic Level - Low:	0.8V
Series:	74LS
Voltage - Supply:	4.75 V ~ 5.25 V
Features:	--
Number of Inputs:	2
Number of Circuits:	4
Logic Type:	XOR (Exclusive OR)
Part Status:	Active
Packaging:	Tube

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SN74LS86ANG4 Application Field and Working Principle

Logic - Gates and Inverters

The SN74LS86ANG4 is an integrated digital logic circuit used in the design and manufacture of a variety of digital logic devices, from clocks and timers to computers and microcontrollers. Specifically, it is a \'quad XOR\' gate, meaning it contains four independent binary XOR (exclusive-OR) gates in one package. This makes it a powerful functional logic circuit to have at one\'s disposal, as it simplifies the design of complex digital systems.

Functionality

The SN74LS86ANG4 XOR gate takes two input signals, A and B, and produces only one output signal, X. The output is \'high\' (or a logical \'1\') only when the two inputs A and B are on different logic levels; that is, when one of the inputs is \'high\' (1) and the other is \'low\' (0). If both A and B are on the same logic level, then the output is \'low\' (0). As such, this circuit is one of the basic and most important logic gates.The outputs of all the XOR gates within the SN74LS86ANG4 are individually accessible, and so it can be used to create complex combinations and arrangements of logic statements. This makes it suitable for applications where a multi-way switching element is required, such as in industrial process control, where the SN74LS86ANG4 provides multiple inputs to a central processor.

Principles of Operation

At the heart of the SN74LS86ANG4, is a complementary MOS (CMOS) transistor based logic design (also known as CMOS logic). It is made up of a network of transistors in which the logic state of each logic element is determined by the combination of signals that it receives at its input pins.The basic structure of an XOR gate consists of two input pins and one output pin, all connected to a transistor. The output can be either \'high\' or \'low\', and will switch between them based on the states of the two input pins. If one of the inputs is \'high\' (1) and the other is \'low\' (0) then the output is \'high\' (1), and if the two inputs are at the same logic level, the output is \'low\' (0).The SN74LS86ANG4 achieves this XOR logic using CMOS logic, which consists of a network of transistors connected in such a way that the input signals cause a \'charge transfer\' between two capacitors. Through this mechanism, the circuit is able to determine the logic level of its output depending on the logic level of its input signals.

Applications

Being a multi-way switching element, the SN74LS86ANG4 is a versatile digital circuit and as such can be used for a range of applications. These include clocks and timers, industrial process control, computer and microcontroller design, and robotics.In clocks and timers, the SN74LS86ANG4 can be used to create complex triggers, such as a quadruple-Pulse-Width-Modulation (PWM) circuit. This is achieved by connecting different logic levels through the logic network of the SN74LS86ANG4, allowing both increasing and decreasing timings to be achieved.Industrial process control is also a major application of the SN74LS86ANG4, with many systems requiring multi-way switching elements. Here, the SN74LS86ANG4 can provide multiple inputs to a central processor, thereby allowing for more complex processes to be controlled.In computer and microcontroller design, the SN74LS86ANG4 is commonly used in the design of static and dynamic digital logic gates. In static logic design, the SN74LS86ANG4 can provide fast digital logic levels, while in dynamic logic design, it can act as a multi-level switch to reduce power consumption. Additionally, it can also be used in the design of sequencers and a variety of digital systems.Finally, the SN74LS86ANG4 can be used in robotics, the use of multiple inputs to control the movement of servo motors being a common application. Here, the SN74LS86ANG4 can combine the signals of different sensors, allowing for more accurate and responsive servo motor control.

Conclusion

The SN74LS86ANG4 is a powerful and versatile quad XOR gate, and as such can be used for a wide range of applications. From clocks and timers, to industrial process control, computer and microcontroller design, and robotics, the SN74LS86ANG4 provides a reliable and cost-effective means of creating complex digital systems.

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