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 B is most useful when combined with a timer such as a based circuit.

led – Problem with timer and counter – Electrical Engineering Stack Exchange

It couldn’t be that though since sometimes the same LED will flash two or three times in a row ocassionally. We do not charge a packaging or handling 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. You can see the delivery time and cost at the shipping stage, or by using the shipping estimator from within the shipping basket.

I’m a first year student of E.

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CMOS – CMOS – Decade counter with 10 decoded outputs

Problem with timer and counter Ask Question. The IC datashdet provide up to If so, is it normally datasehet or normally open? Per Curd’s comment, I am also including the source current diagram from the datasheet. For the given circuit current flows through LED if output is high the source current is relevant. The pulse from the timer can be used to activate the B circuit. Continuous pulsing by the IC results the LEDs of the B turning on and off in sequence, creating a ripple effect.


Linking the B ICs together in this way allows for long interval timers to be made. Max quiescent current at 5V: A astable circuit is used to pulse the B at regular intervals.

They are versatile and relatively simple to put together. It has 16 pins and looks like any other 16 pin integrated datadheet.


However the LED’s flash in eatasheet orders. That’s equivalent to 1. Do you have the datasheet for your specific ? As long as the clock inhibit is held low, upon a rising edge of the clock pin the output will count up from zero, one number at a time for each rising edge on the clock pin.

Sign up to our newsletter for promotions. I’m attempting to make a circuit that flashes each LED sequentially.

Decade counter (4017B)

Be the first to review this product. Delivery times vary for international orders depending on the service selected datasneet the destination. Supplying no voltage requires either a high-impedance output or leaving an input pin floating.

A 16 DIL pin Decade Counter with 10 decoded outputs and inputs including, clock, reset, and clock inhibit. Add to Cart Details.

They can be used in timing circuits and are often used to switch on and off LEDs or motors or other circuits. If you spend over Click ask a question to be the first. IgnacioVazquez-Abrams I didn’t know that.

A good example is seen below.