An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters . HCF datasheet, HCF circuit, HCF data sheet: STMICROELECTRONICS – QUAD BILATERAL SWITCH FOR TRANSMISSION OR. HCF Datasheet, HCF PDF, HCF Data sheet, HCF manual, HCF pdf, HCF, datenblatt, Electronics HCF, alldatasheet, free.

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I think the TI parts always worked, but that was after trying others that seemed to work OK in other circuits when I checked a few. May 26, Product is in volume production. Anyone, help me please, thanks That would be the first type of IC chip that I have ever run across that was quirky like that. I hadn’t thought of that CMOS devices can be damaged by static electricity simply by touching them out of circuit with your bare hands, and it gets worse from there.

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. In order for signals to pass through from the input side to the output side, the control or enable terminal must be HIGH. First, to power thewe connect 5V of power to V DDpin 14, and we connect the ground pin, pin 7, to ground.

Each switch has an input, output, and control terminal. A bilateral switch acts as a single pole, single throw switch. The Parker Guitars Forum.


Product is in volume production only to support customers ongoing production. This means that either side of the switch can be used as the input.

HCF4066 Ver la hoja de datos (PDF) – STMicroelectronics

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. If the switching signal is marginal, or not filtered well, then you can have problems with some manufacturer’s CD parts and some models of those parts in some cases.

The pinout of the chip is shown below. Same pinouts, same description of what it does, etc. The most common waveform is a sine wave. Applying these principles, you can easily see how to use all 4 switches if wanted.

HCF Datasheet PDF – STMicroelectronics

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It can be obtained cheaply at a number of online electronic retailers. If the pushbuttons are not pressed down, then no signal will appear at the outputs.

In this circuit, we will show the basic functionality of the chip by passing analog signals through 2 of the switches by digital control. Computers and Peripherals Data Center. In theory, it should be working fine. Concrete by Design Personal. To the inputs of the 2 switches, we feed an analog signal. Like Paul said – if you use a socket you will eliminate a lot of the problems that could happen replacing an IC like this.


The control terminal enables the input to go to output. Paul Marossy Hero Member Posts: Who We Are Management. Each switch has a single input and a single output terminal.

Hhcf4066 can view the control terminal as the signal which closes the switch so that the input signal can cross over to the output. Please login or register.

They are not as rugged as something like an opamp. I suppose the circuit it is going in matters, too. May 29, As the quad term implies, the is composed up of 4 switches. Rad-hard, high voltage, CMOS logic series. Menu Products Explore our product portfolio.

Support Center Datasheet Center. Each switch also has a control or enable terminal.

HCF datasheet & applicatoin notes – Datasheet Archive

So by a HIGH digital signal fed into the control terminal, we can pass an analog signal from the input terminal to the output terminal of the switch. A bilateral switch is so called because the switch can operate forward or reverse. The is an IC composed of switches which are designed to switch analog signals via digital control. Try a different one in its place and see what happens.

It doesn’t matter who made it, or if there is a different “code” on it.