The CDBM CDBC is a quad bilateral switch in- tended for the transmission or multiplexing of analog or digi- tal signals It is pin-for-pin compatible with. Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise . CD Datasheet, CD Quad Bilateral Switch Datasheet, buy CD

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How to Build a 4066 Quad Bilateral Switch Circuit

To the inputs of the 2 switches, we feed an analog signal. This means that either side of the switch can be used as the input. You can view the control terminal as the signal which closes the switch so that the input signal can cross over to the output. Each switch has a single input and a single output terminal.

One place it can be obtained is at Taydaelectronics at the following link: In order for signals to pass through from the input side to the output side, the control or enable terminal must be HIGH.

To the control terminals of the 2 switches, we connect a pull-down resistor pushbutton circuit. The is a quad bilateral switch circuit, meaning that is composed of 4 switches. This enables the signal at the input to go to the output. If a signal is fed into the input while the pushbutton is unpressed, no signal will appear at the output.

This establishes sufficient power to the chip.


The is an Dayasheet composed of switches which are designed to switch analog signals via digital control. The most common waveform is a sine wave. So by a HIGH digital signal fed into dagasheet control terminal, we can pass an analog signal from the input terminal to the output terminal of the switch. When unpressed, the pushbutton has the signal LOW by default. A bilateral switch is so called because the switch can operate forward or reverse.

CD Datasheet(PDF) – TI store

The really functions as an analog switch. The has a wide operating voltage of 5VV. In this circuit, we will show how to connect a bilateral switch chip to inputs and outputs using the quad bilateral dc4066 chip.

In this circuit, we will show the basic functionality of the chip by passing analog signals through 2 of the switches by digital control. The control terminal enables the input to go to output. Without the control or enable switch, there can be no output.

So you will see that if you press down the pushbutton with an analog signal or digital signal at the input, that same signal will appear at hte output. Each switch has an input, output, and control terminal.

How the Circuit Works So, in order for this circuit to work, the pushbutton cd44066 be pressed down for each of the switches. Each switch also has a control or enable terminal.

When pressed down, the pushbutton makes the signal HIGH.

What this means is we feed an analog signal into the input of the switch and it reaches the cd0466 only if a HIGH digital signal is fed into the control or enable terminal. The datasheet for the can be found at the following link: The switches are labeled from 1 to 4. The quad bilateral switch chip is a chip that is made up of 4 switches.


So current can flow in one direction and the other direction, depending on which side is the input. V DD and ground, pins 14 and 7, are the power pins. The is a pin chip.

How to Build a Quad Bilateral Switch Circuit In this circuit, we will show how to connect a bilateral switch chip to inputs and outputs using the quad bilateral switch chip. With the control switch HIGH, then the switch closes and there can be an output. For this circuit, we are only going to be using 2 of the 4 switches. It can be obtained cheaply at a number of online electronic retailers. A bilateral switch acts as a single pole, single throw switch.

The pinout of the chip is shown below. As the quad term implies, the is composed up of 4 switches. First, to power thewe connect 5V of power to V DDpin 14, and we connect the ground pin, pin 7, to ground.

If the ratasheet are not pressed down, then no signal will appear at the outputs. Applying these principles, you can easily see how to use all 4 switches if wanted.

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