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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This is how I am using the IC. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. Potentiometer Questions Started by norbss Yesterday at For a better experience, please enable JavaScript in your browser before proceeding.

What is my problem here?

Problem understanding HCF4541 Programmable Timer Datasheet

I think I am reading the logic and timing tables correctly and that the k, k and 50 pic is all in range? The timer is working normally.

Replacing a 4 pin leaded inductor with a 2 pin Started by gcf4541 Yesterday at RS k Pin 4. Then you will see what is wired wrong.


HCF Datasheet – PROGRAMMABLE TIMER from SGS-Thomson Microelectronics

Single transition mode to Gnd Pin I was expecting nothing on the output except maybe momentarily ,until I had started the count and it had completed. Your reset input pin 6 is shown not connected to anything, it will float in this situation causing random resets due to noise. Articles Top Articles Search resources.

Hi dr pepper, I see what you mean mate but just tried and still same results. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.

Media New media New comments Search media. Please provide a schematic of what you have beside a schematic of the circuit in the datasheet. Not Connected Pin Can anyone suggest where I am going wrong? Frequency Select B to Gnd for Pin CT 50pF Pin 3. Hi to all, I am trying to build a long interval timer using the HCF IC and am not getting the results I expected, but I am not certain that I am reading hcf45541 datasheet correctly. If pin 6 is high then the timer is always reset.


To participate you need to register. If I put the datasueet reset dagasheet to Gnd and power up I get a neg on the output. Output to LED through 1k Pin 9. Just saying hello Started by MichaelaJoy Yesterday at 6: Not Connected Pin 5.

HCF Datasheet pdf – PROGRAMMABLE TIMER – ST Microelectronics

Forums New posts Search forums. You must log in or register to reply here. By continuing to use this site, you are consenting to our use of cookies. Auto Reset to Gnd Pin 6. ycf4541

The datasheet is puzzling me to say the least. RTC k Pin 2. Started by fastline Yesterday at 8: Welcome to our site!