MC14066BDR2G

Series:	4000B
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Bilateral, FET Switches
Circuit:	1 x 1:1
Independent Circuits:	4
Current - Output High, Low:	--
Voltage Supply Source:	Dual Supply
Voltage - Supply:	3 V ~ 18 V
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	14-SOIC
Base Part Number:	4066

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Introduction

The MC14066BDR2G is a Quad Bilateral Switch Array, a logic-signal switch, multiplexer, and decoder device that offers versatile functionality in the context of its use as a four-way switch array. It is part of the industry-leading family of switch arrays offered by ON Semiconductor whose central purpose is to combine two signals into one by multiplexers and decoders, while preserving their integrity and quality. The central function of the MC14066BDR2G is to control the intensity of the light produced by LED chips connected to four input channels.

Field of Application and Features

The versatile MC14066BDR2G can be highly useful for various applications. Automotive applications in particular benefit greatly from the switch array, as its ability to control four input channels in sequence, thereby enabling multiple shifts between certain channels, is deeply advantageous in controlling vehicle lights. Additionally, the device is regularly employed in applications such as graphic displays, LCD lighting, and digital video. Asides from the range of applications in the realm of automotive and telecommunications technology, the MC14066BDR2G is equally appropriate for other applications including process control systems, consumer-grade audio-visual systems, and point-of-sale systems.What sets the MC14066BDR2G apart from other switch arrays are its various features. First, the device has a wide operating temperature range of -55 °C to 125 °C, suitable for extreme temperatures and conditions. It further has an input voltage of up to 10.0 V, and its low constant ON resistance of 8Ω minimizes the power. Finally, its technical features include a 10-bit Digital Addressable LED Driver with 4 channels, a galvanic isolation of up to 4000 VAC, and the highest in-rush current powers up to 200 A.

Working Principle

In order to understand the working of the MC14066BDR2G, it is pertinent to first understand the function of the switch array. The array generally is used to combine two signals into one, as well as to control one signal with the help of the other signal. It consequently is apt for decoders and multiplexers, as it controls the input voltage by shifting its intensity. The matching of signal currents and voltages, as well as the hook-up of both input and output signals, is simpler with the array.The MC14066BDR2G supplies the voltage in a controlled manner, as each signal is fed through a transistor. Each channel is made up of four transistors, each designed so that the same current flows through all of them at the same time. As each channel has a regulator for current, the collector-emitter voltage on each transistor remains constant, regardless of the brightness of the LEDs. Consequently, the current flows through each transistor without affecting the emitter-collector voltage impinging on the other transistors of the channel.Finally, the output of each channel moves to the switch array and is controlled by the input signal. By varying the input signal and controlling the degree of the output signal, the LEDs connected to the channel can be made to light up in the desired intensity.

Conclusion

The MC14066BDR2G is a popular switch array device incorporated in multiple analog and digital applications. By combining two signals into one, controlling the intensity of the output signal, and providing unmatched inrush current, the device has been increasingly employed in a range of applications including automotive products; process control systems; audio-visual systems and more. Understanding the features and working principle of the device can thus provide considerable insight into the usefulness of the MC14066BDR2G as a switch array, multiplexer, and decoder.

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