CD4553 PDF

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One as a clock reference, and the other one as an adjustable frequency? Note that C6 is used to set up the refresh rate of the Here is an Octave code that can be useful to you: For proper operation, V in and V out should be constrained. However, precautions must be taken to avoid.

Become a member to follow this project and never miss any updates. That’s exactly what I did! An on—chip oscillator provides the low—frequency scanning cd45553 which drives the multiplexer output selector.

Metronome |

So, what we want to do is: So, we need a clock input, with a variable frequency in order to set up the tempo. February, — Rev. The wiring is pretty straightforward as the and are especially designed to control three 7-segments displays. Digit select outputs provide display control. This part is now done, and according to figure 1. So here we are, everything’s now ready cr4553 the display. All outputs are TTL compatible.


About Us Contact Hackaday. Already have an account? DC or Transient per Pin. So it looks like we need to have an oscillator on which we can easily change its frequency. A low-power selectable frequency generator. Theoretically they should work together, but I never had the time to test. Wiring between the CD and the CD Sign up Already a member?

(PDF) CD4553 Datasheet download

T vd4553 Storage Temperature Range. I out Output Current. That works for me, but, you can change it if you want. A careful choice of these components is necessary to set the tempo range of our metronome.

CD4553: 3−Digit BCD Counter

You should Sign Up. Together with a few resistors and capacitors, this cdd4553 to the following: A quad latch at the output of each counter permits storage of any given count.

Because I need it, I can and I’m cheap. This device is used in instrumentation counters, clock displays, digital panel meters, and as a building block for general logic applications. Yes, delete it Cancel. Shall we use two oscillators then?

CD 3−Digit BCD Counter

The capacitors and resistors determine the oscillator frequency and duty cycle. Thanks to that, we will be able to trigger the different vd4553 sequentially.


A clock input CLK. Your Password Forgot your password?

Among the various existing crystal oscillators, I used a CD with a 32, Hz quartz. Now that we have a reference clock at 32 Hz, we need to trigger the CD’s inputs in the right order. The reason for that low frequency is that we will need a much higher frequency for the clock input of the CD The best thing to do is then to add a decimal counter c4553 the CD and the CD The only “tricky” part is that we need an inverter at the Q1 output of thesee figure 1.

However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high—impedance circuit. T L Lead Temperature. Because that an interesting challenge, and that’s good to remember the basics, and also because I found that this is actually totally feasible.

P D Power Dissipation. Project Owner Contributor As an example, I give some values here that correspond to a range of about 74 bpm to bpm as shown by the figure 1.