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 & applicatoin notes – Datasheet Archive

By continuing to use this site, you are consenting to our use of cookies. Can anyone suggest where I am going wrong? Just saying hello Started by MichaelaJoy Hc4541 at 6: Single transition mode to Gnd Pin This is how I am using the IC. Then you will see what is wired wrong.

Media New media New comments Search media. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. RS k Pin 4.


For a better experience, please enable JavaScript in your browser before proceeding. Welcome to our site! I was expecting nothing on the output except maybe momentarily ,until I had started the count and it had completed.

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 Articles Top Articles Search resources. I think I am reading the logic and timing tables correctly and that the k, k and 50 pic is all in range?

If pin 6 is high then the timer is always reset. Not Connected Pin 5.

Problem understanding HCF4541 Programmable Timer Datasheet

Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at You must log in or register to reply here. Auto Reset to Gnd Pin 6.

Not Connected Pin The timer is working normally. 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.


Datasgeet I put the manual reset line to Gnd and power up I get a neg on the output. CT 50pF Pin 3. Click here to register now. Started by fastline Yesterday at 8: Frequency Select B to Gnd for Pin Output to LED through 1k Pin 9. The datasheet is puzzling me to say the least.

(PDF) HCF4541 Datasheet download

To participate you need to register. What is my problem here? Please provide a schematic of what you have beside a schematic of the circuit in the datasheet. Forums New posts Search forums. Your reset input pin 6 is shown not connected to anything, it will float in this situation causing random resets due to noise. RTC k Pin 2. Hi dr pepper, I see what you mean mate but just tried and still same results.