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(hcf4017be) decade counter with 10 decoded outputs

I have been in the phone tapping and phone coding business for over 20 years. Boncuk New Member Feb 26, The receiving phone can pick up the end of half dtaasheet ring and this will not be detected by the caller, but the circuit will see it as a full ring. But in practice we can neglect it as not affecting our project aim in any way. A much better and simpler design is to have two timing circuits that detect ringing for say 10 seconds but not longer than 20 seconds.

Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at This really neat chip contains a counter and a decoder circuit, that can show datahseet single output pin for each count from 0 to 9. datwsheet

Pioneer Elite vsxtx water damage no power Started by Watin 48 minutes ago Replies: This ensures that they cannot be accidentally pulled off the circuit easily. Media New media New comments Search media. They are versatile and relatively simple to put together. Datasheets, Manuals or Parts. Hari Pravin November 6, Reply. This can all be done with a 74c Maybe use that with a gate for pin 15 Reset?


Real quick something that could maybe work is using a chip like a in a missing pulse configuration. On reaching “9” again returns to “0” and so on. Counters hcfbe datasheet hcfbs the B are cheap and yet surprisingly useful.

Decoding and control hcfbe datasheet by 16 datasjeet and 15 gates. Linking the B ICs hcfbe datasheet in this way allows for long interval timers to be made. The B is most useful when combined with a timer such as a based circuit. This is one example of why I design with a microcontroller. This the circuit light led flashing with show of 10 LED.

But look up other attachment. I think this is the most perfect circuit. I developed the Infinity Bug over 15 years ago using a coded ring. Chfbe 12 is Carry output, for the clock input of an additional counter or an external datasheeh that hcfbe datasheet count is complete.

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HCF4017BE Decade Counter with 10 Decoded Outputs

The outputs will change at one tenth the speed of the first B IC. Upon this condition when he tries to redial and want to turn on relay on 5 rings, relay will turn on before 5 rings that is on 3rd ring.

The output would remain high till the time between pulses exceeded the RC time set and the output would go low. A good example hcfbe datasheet seen below.


A astable circuit is used to pulse dahasheet B at regular intervals. A number of B IC circuits can be connected together by connecting pin 10 divide by 10 pin to the input on the next Ucfbe IC. See my attached link ” in first post. It has 16 pins and looks like any other 16 pin integrated circuit.


Forums New posts Search forums. HCFBE I have suffered one displeasing feature most times useful of this counter, When the clock advances, decade counting also advances from 0 to 9 then 0 to 9 and so on.

HCFBE Datasheet, PDF – Datasheet Search Engine

That is before completing 5 rings he deliberately cut his phone. The pulse datasheef the timer can be used hcfbe datasheet activate the B circuit.

Add a Comment Datasheet reply Your email address will dafasheet be published. An 8 pin PIC chip and 6 components is all you need. In most applications this is a good feature. Your circuit is quite useless. Boncuk, if i have not understand wrongly, the 4 doides connected from 2nd to 5th out puts are not important, since as he said if the ring discontinues in between, then on of the input would be high and you will never get a reset output.

Rich Man May 14, Reply. All these are done to count exactly 5 rings. Datasheet search engine for Electronic Components and Semiconductors. Click here to register now.

All suggestions are very valuable.