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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. Datasheets, Manuals or Parts.

Click here to register now. Where I have made a slight change to fulfill my requirement I think this would be a simpler version than all circuits presented by others here.

Replacement Transformer Started by ncag Today at 7: Pin 16 is positive hcfbe datasheet supply and pin 8 is hcfbe datasheet ground.

Rich Man May 14, Reply. Pioneer Elite vsxtx water damage no power Started by Watin 48 minutes ago Replies: Q1 through Q4 are ORed with diodes.

Electro Tech is an online community dataeheet overmembers who enjoy talking about and building electronic circuits, projects and gadgets. The IC counts with 5 D-type flip-flops. Real quick something that could maybe work is using a chip like a in a missing pulse configuration.

Texas Instruments/TI CDBE – PDF Datasheet – Series In Stock |

Hari Pravin November 6, Reply. The output would remain high till the time between pulses exceeded the RC time set and the output would go low.

Articles Top Articles Search resources. In most applications this is a good feature. This occurs because of the property of by which it keeps track of all past before power up also activities. Add a timer to pulse datasheet decade counter. Thus the counter starts in a fresh mood to count exact no. You would need to calculate the time datashet between hct4017be Pulses on ring signal and set things up as a retriggerable one shot.


All these are done to count exactly 5 rings.


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.

Counters hcfbe datasheet hcfbs the B are cheap and yet surprisingly useful.

Learn how your comment data is processed. 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. The outputs will change at one tenth the speed of the first B IC. This really neat chip contains a counter and a decoder circuit, that can show a single output pin for each count from 0 to 9.

This can all be done with a 74c But this will introduce Delay time 1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Decoding and control hcfbe datasheet dataeheet 16 inverters and 15 gates.

(hcf4017be) decade counter with 10 decoded outputs

That is five LOW-to-HIGH clock ring edges detected, then when goes to “6” out the counter automatically reset by datasjeet arrangement shown hcf44017be schematic. This the circuit light led flashing with show of 10 LED. They are versatile and relatively simple to put together. I think this is the most perfect circuit. Zelino February 17, Reply. The output would be low and on rings go high.


The monostable is initiated by the first positive clock edge at pin 14 CLK. The B is most useful when combined with a timer such as a based circuit. Chfbe 12 is Carry output, for the clock input of an additional counter or an external circuit that hcfbe datasheet count is complete.

This is one example of why I hcd4017be with a microcontroller. By continuing to use this site, you are consenting to our use of cookies. Hi, I modified the circuit to automatically reset independent of the number of rings.

HCF4017BE Decade Counter with 10 Decoded Outputs

If I would get such a counter I will add one relay at the output of opto-coupler, which will close power up connection of my counter when first ring signal occurs. But what happened when someone wouldn’t complete 5 rings missed call? See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. For a signal input continue the circuit can produce general frequency may use IC NE all right.