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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Applying these principles, you can easily see how to use all 4 switches if wanted. In theory, it should be working fine. No commitment taken to produce Proposal: This enables the signal at the input to go to xatasheet output. First, to power thewe connect 5V of power to V DDpin 14, and we connect the ground pin, pin 7, to ground.

Product is in volume production Evaluation: Who We Are Management. Same pinouts, same description of what it does, etc. If the pushbuttons are not pressed down, then no signal will appear at the outputs. Without the control or enable switch, there can be no output.

Product is under characterization. Please contact our sales support for information on specific devices. Rad-hard, high voltage, CMOS logic series. The control terminal enables the input to go to output.

HCF Datasheet PDF – STMicroelectronics

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I guess they can be finicky things, eh? That was not the case a decade ago, but they had other problems back then. 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. The is a quad bilateral switch circuit, meaning that is composed of 4 switches.


datasheeh No commitment taken to design or produce NRND: Anyone, help me please, thanks I suppose the circuit it is going in matters, too. Selectors Simulators and Models. And you can’t see if it has been damaged by static, either. That would be the first type of IC chip that I have ever run across that was quirky like that.

It may have been damaged by static electricity.

How to Build a 4066 Quad Bilateral Switch Circuit

The pinout of the chip is shown below. Like Paul said – if you use a socket you will eliminate a lot of the problems that could happen replacing an IC like this. What this means is we feed an analog signal into the input of the switch and it reaches the output only if a HIGH digital signal is fed into the control or enable terminal. It doesn’t matter who made it, or if there is a different “code” on it. When unpressed, the pushbutton has the signal LOW by default. If so, I wonder if that might be a factor.

This is image of IC this is the pictures of both Ic Dataaheet 27, In this circuit, we will show how to connect a bilateral switch chip to datxsheet and outputs using the quad bilateral switch chip. If I use the mono jack all signal is Normal. Please login or register.


May 26, 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. They are not as rugged as something like an opamp. Thanks all, I will upload the picture soon. 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.


Each switch has an input, output, and control terminal. I wonder what might have happened right before this problem started – things like the wrong polarity on a battery can mess up a lot of things. Engineering Model quality level. The most common waveform is a sine wave. Paul Marossy Hero Member Posts: 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. Originally posted by Paul Marossy Really?

In this circuit, we will show the basic functionality of the chip by passing analog signals through 2 of the switches by digital control.

Media Subscription Media Contacts. The quad bilateral switch chip is a chip that is made up of 4 switches.

You can view the control terminal as the signal which closes the switch so that the input signal can cross over to the output. No availability reported, please contact our Sales office.

The really functions as an analog switch. I also made an MXR Envelope Filter and hcf40666 that it’s a significant problem with analog inputs on the control pins – older ‘s worked, only the new TI parts worked, although the new ICs all worked for other things.