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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Hey, I’m kinda new to this forum, but I have a question. The circuit will work alright if you cascade the counters. For a better experience, please enable Dataheet in your browser before proceeding. But now I’m not even getting one chip to work right. Smonjirez New Member Oct 8, Can’t find any errors in my configuration. Hi, that is what audioguru tried to make clear to you. How much current are you trying to draw from the pin?

I’m currently working on a knight rider scanner. Forums New posts Search forums. Did you try to sequence two?


Potentiometer Questions Started by norbss Yesterday at Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Smonjirez New Member Oct 9, Media New media New comments Search media. 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. But if you’re talking about another condensator datasheeet to another input or something, could you please modify my circuit and post it?


Datsheet, I don’t see any problems with how my chip functions, that one just works fine imo. But, it flashes totally randomly and in variating brightness also totally random.

The control pin has nothing to do with decoupling. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Boncuk New Member Oct 6, According to the datasheets I followed it isn’t nessecary to connect pin 5. So well, the cascading comes for later.

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

Welcome to our site! The datasheet for the Cmos Intersil’s ICM shows that an ordinary causes a supply current spike of mA when its output switches.

Datasheets, Manuals or Parts. But, when I connect pin 3 from the timer to pin 14 from the chip and of course the 0V, reset and enable pins to the 0V linethe output is kinda weird. Well I haven’t ground pin 11 indeed. If output current is close to maximum increase the value of C1 accordingly. Smonjirez New Member Oct 6, Boncuk New Member Oct 9, If you don’t then the circuit probably will not work properly. Does anyone know what I did wrong?

HCF (STMicroelectronics) – COUNTERS/DIVIDERS

You do have a resistor in series with the LED? I think you are talking about the 0,1uF capacitor which should be connected to pin 5 control? Your CD is not connected to 0V so it cannot do anything. Yes that was my first attempt but it failed so hard I switched back to just one chip, but it still behaves very odd.


You must log in or register to reply here. I think this is what you want? This stays the same when I mount more LEDs to the other ports, it’s not how it’s supposed to be. Thread starter Smonjirez Start date Oct 6, Replacement Transformer Started by ncag Today at 7: The datasheet for the LM says to use a 0. Articles Top Articles Search resources. By continuing datashee use this site, you are consenting to our use of cookies. I don’t see the important supply bypass capacitors.

Should I do that? Got part of the scheme from internet Knight Rider lights for model cars and extended it myself with another additional chip to use 8 LEDs in this “back and forth” configuration.

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 datashset ohm resistorno problems there. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.

Else I still have no idea what to do.