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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Hi dr pepper, I see what you mean mate but just tried and still same results. Potentiometer Questions Started by norbss Yesterday at Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. Single transition mode to Gnd Pin Your reset input dxtasheet 6 is shown not connected to anything, it will float in this situation causing random resets due to noise.

RS k Pin 4. By continuing to use this site, you are consenting to our use of cookies. Auto Reset to Gnd Pin 6. Output to Hcf45441 through 1k Pin 9. Just saying hello Started by MichaelaJoy Yesterday at 6: Articles Top Articles Search resources. RTC k Pin 2. Then you will see what is wired wrong.


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 hcf5441 I expected, but I am not certain that I am reading the datasheet correctly.

What is my problem here?

HCF STMicroelectronics, HCF Datasheet

Not Connected Pin 5. You must log in or register to reply here. If pin 6 is high then the timer is always reset. The daasheet is puzzling me to say the least. This is how I am using the IC.

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For a better experience, please enable JavaScript in your browser before proceeding. Started by fastline Yesterday at 8: I was expecting nothing on the output except maybe momentarily ,until I had started the count and it had completed. Frequency Select B to Gnd for Pin hc4f541 Can anyone suggest where I am going wrong?

(PDF) HCF4541 Datasheet download

Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Welcome to our site! Media New media New comments Search media.


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. Please provide a schematic of what you have beside a schematic of the circuit in the datasheet. If I put the manual reset line to Gnd and power up Hcd4541 get a neg on the output. Click here to register now. Not Connected Pin This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.