HCF Programmable Timer. 16 STAGE BINARY COUNTER LOW SYMMETR. OUTPUT RESISTANCE, TYPICALLY at VDD = 15V OSCILLATOR. HCF Datasheet, HCF PDF, HCF Data sheet, HCF manual, HCF pdf, HCF, datenblatt, Electronics HCF, alldatasheet, free. Part Number: HCF, Maunfacturer: ST Microelectronics, Part Family: HC, File type: PDF, Document: Datasheet – semiconductor.

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HCF Datasheet pdf – PROGRAMMABLE TIMER – ST Microelectronics

Single transition mode to Gnd Pin eatasheet Welcome to our site! You must log in or register to reply here. The timer is working normally. Your reset input pin 6 is shown not connected to anything, it will float in this situation causing random resets due to noise.

(PDF) HCF4541 Datasheet download

Frequency Select B to Gnd for Pin Please provide a schematic of what you have beside a schematic of the circuit in the datasheet. Output to LED through 1k Pin 9.


Not Connected Pin 5. Potentiometer Questions Started by norbss Yesterday at For a better experience, please enable JavaScript in your browser before proceeding. Forums New posts Search forums. If I put the manual reset line to Gnd and power up I get a datashwet on the output. Click here to register now.

Started by fastline Yesterday daatasheet 8: Not Connected Pin What is my problem here?

I think I am reading the logic and timing tables correctly and that the k, k and 50 pic is all in range? To participate you need to register. CT 50pF Pin 3. Just saying hello Started by MichaelaJoy Yesterday at 6: The datasheet is puzzling me to say the least. Hi to all, I am trying to build a long interval timer using the HCF IC and am not getting datashet results Dqtasheet expected, but I am not certain that I am reading the datasheet correctly.

Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Articles Top Articles Search resources. RS k Pin 4.


If pin 6 is high then the timer is always reset. This is how I am using the IC. Auto Reset to Gnd Pin 6. By continuing to use this site, you are consenting to our use of cookies.

RTC k Pin 2. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.

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I was expecting nothing on the output except maybe momentarily ,until I had started datasheeet count and it had completed. Then you will see what is wired wrong.