Updated : Oct 09, 2019 in Business


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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If pin 6 is high then the timer is always reset. 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 the datasheet correctly.

Your reset input pin 6 is shown not connected to anything, it will float in this situation causing random resets due to noise. Started by fastline Yesterday at 8: Click here to register now.

Auto Reset to Gnd Pin 6. The timer is working normally. I was expecting nothing on the output except maybe momentarily ,until I had started the count and it had completed.


HCF Datasheet – PROGRAMMABLE TIMER from SGS-Thomson Microelectronics

For a better experience, please enable JavaScript in your browser before proceeding. Not Connected Pin 5. By continuing to use this site, you are consenting to our use datwsheet cookies.

The datasheet is puzzling me to say the least. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. 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 ratasheet. Hi dr pepper, I see what you mean mate but just tried and still same results. You must log in or register to reply here. Single transition mode to Gnd Pin If I put the manual reset line to Gnd and power up I get a neg on the output.

Problem understanding HCF4541 Programmable Timer Datasheet

Then you will see what is wired wrong. RTC k Pin 2.


I think I am reading the logic and timing tables correctly and that the k, k and 50 pic is all in range? Frequency Select B to Gnd for Pin Forums New posts Search forums.

(PDF) HCF4541 Datasheet download

Output to LED through 1k Pin 9. Welcome to our site! Not Connected Pin CT 50pF Pin 3. Just saying hello Started by MichaelaJoy Yesterday at 6: To participate you need to register.

HCF Datasheet, PDF – Alldatasheet

Can anyone suggest where I am going wrong? Potentiometer Questions Started by norbss Yesterday at Articles Top Articles Search resources. Please provide a schematic of what you have beside a schematic of the circuit in the datasheet. RS k Pin 4. Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at What is my problem here? This hc4f541 how I am using the IC.