HCF Counters/dividers. MEDIUM SPEED OPERATION: 10 MHz (Typ.) at VDD = 10V FULLY STATIC OPERATION STANDARDIZED SYMMETRICAL. HCF datasheet, HCF circuit, HCF data sheet: STMICROELECTRONICS – COUNTERS/DIVIDERS,alldatasheet, datasheet, Datasheet search site. HCF Semiconductors are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for HCF Semiconductors.

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Potentiometer Questions Started by norbss Yesterday at If you don’t then the circuit probably will not work properly.

CD4017 HCF4017

Media New media New comments Search media. Boncuk New Member Oct 6, Your CD is not connected to 0V so it cannot do anything. For a better experience, please enable JavaScript in your browser before proceeding. How much current are you trying to draw from the pin?

CD HCF – Digiesseshop

Btw, I’m using a 12 – 13,5v accumulator as a powersource. Click here to register now. But if you’re talking about another condensator connected to another input or hcd4017, could you please modify my circuit and post it? Yes that was my first attempt but it failed so hard I switched back to just one chip, but it still behaves very odd.


So well, the cascading comes for later. But now I’m not even getting one chip to work right.

Weird 4017 behaviour

I don’t see the important supply bypass capacitors. The datasheet for the Cmos Intersil’s ICM shows that an ordinary causes a supply current spike of mA when its output switches.

The datasheet for National’s ordinary the LM shows that it needs two supply bypass capacitors to keep other ICs from crashing when the output switches. Else I still have no idea what to do. Can’t find any errors in my configuration.

Well I haven’t ground pin 11 indeed. Thread starter Smonjirez Start date Oct 6, The circuit will work alright if you cascade the counters. Smonjirez New Member Oct 6, If output current is close to maximum increase the value of C1 accordingly.

Smonjirez New Member Oct 9, You must log in or register to reply here. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. I think you are talking about the 0,1uF capacitor which should be connected to pin 5 control? Welcome to our site! Should I do that?

HCF (STMICROELECTRONICS) PDF技术资料下载 HCF 供应信息 IC Datasheet 数据表 (1/12 页)

Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Smonjirez New Member Oct 8, The problem is, I’ve got the timer to work, no problem there, can adjust the pulsing speed with a k potentiometer just mounted a LED to pin 3 with a ohm resistorno problems there. Got part of the scheme from internet Hcg4017 Rider lights for model cars and extended it myself with another additional chip to use 8 LEDs in this “back and forth” configuration.


Replacement Transformer Started by ncag Today at 7: This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Why don’t people read the datasheets?? You do have a resistor in series with the LED?

Hi, that is what audioguru tried to make clear to you. To participate you need to register. Hey, I’m kinda new to this forum, but I have a question.

Did you try to sequence two? Boncuk New Member Oct 9, Does anyone know what I did wrong?