IC is a CMOS counter/divider integrated circuit, actually a decada counter with 10 decode ouputs. It is 5 stage Johnson counters having 10 decoded. DESCRIPTION. The HCFB is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages. Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise .

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The pulse from the timer can be used to activate the B circuit.


International orders may be charged import duty dependant on local import laws and duty rates. Click ask a question to be the first. Is that switch actually there? Counters such as the B are cheap and yet surprisingly useful. These charges are usually 40117b to you directly from UPS. You can see the delivery time and cost at the shipping stage, or by using the shipping estimator from within the shipping basket.

That’s equivalent to 1. Per Curd’s comment, I am also including the source current diagram from the datasheet. A good example is seen below. I’m a first year student ratasheet E. Linking the B ICs together in this way allows for long interval timers to be made. Problem with timer and counter Ask Question. Curd You are correct, I had not paid attention to the schematic properly. The IC can provide up to Typical output drive at 5V: Supplying no voltage requires either a high-impedance output or leaving an input pin floating.


That picture isn’t exactly what I did but close enough that I thought it would help show what I was attempting. The wires from the battery snap and also the ones from the toggle switch are fed through small holes in the PCB. Try a higher resistor value to lower ddatasheet current significantly, say 10mA.

Alternatively you can choose the free collection option and have your own courier collect it from us. Max quiescent current at 5V: Same Day Dispatch Orders placed 401b before 3: A astable circuit is used to pulse the B at regular intervals.

This ensures that they cannot be accidentally pulled off the circuit easily. Max clock frequency at 5V: The B is most useful when combined with a timer such as a based circuit.

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If that works, and you want to make them brighter, you’ll need to either find a that has greater current ratings on the output pins or add some transistors.

Sign up to our newsletter for promotions. The pulse from the IC is generated from pin 3. We do not charge a packaging or datashert fee for this service, and you will receive an email when your order has been processed, you can collect half an hour after receipt of this email. Didn’t think about that. The outputs will change at one tenth the speed of the first B IC.

Decade counter B How do you rate this product? You can figure out the resistor value to use by rearranging Ohm’s law: I’ll give it a go and see what happens. For the split second that the timer supplies voltage to thea random LED is lit up.


CMOS – CMOS – Decade counter with 10 decoded outputs

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. They are versatile and datashwet simple to put together. It couldn’t be that though since sometimes the same LED will flash two or three times in a row ocassionally.

If you spend over If you spend between 40 and 48 – Add to Cart Details. Note that for the sake of simplicity, I only included 5 LED’s in the schematic. For the given circuit current flows through LED if output is high the source current is relevant.

It is quite possible that you need more current than the dattasheet handle. The counter is reset to zero when the reset line is held in a high state. dstasheet

The B is an integrated circuit which has been designed to count pulses. A 16 DIL pin Decade Counter with 10 decoded outputs and inputs including, clock, reset, and clock inhibit.

Decade counter (4017B)

JavaScript seems to be disabled in your browser. Delivery times vary for international orders depending on the service selected and the destination. Would you like to answer one of these unanswered questions instead? And to top it off, the CD has a dedicated reset pin; hurray for edumacation Collection If you would like to collect your order, or use your own courier then there is an option you can select during checkout.