The is a member of the Series CMOS range, and contains four independent NAND gates, each with two inputs. The pinout diagram, given on the. NAND Gate, CD, 2 Input, mA, 3 V to 18 V, DIP with direct implementation of the NAND function and supplement the existing family of CMOS gates. Texas Instruments CDBE CD – CMOS Quad 2-Input NAND Gate (Pack of 5): : Industrial & Scientific.
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Aug 6, 5.
Aug 6, 4. Maybe it will be simpler to use Dec 20, 10, 1, Aug 6, 6.
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Your name or email address: I got rid of the switch that shorts the output to ground, was using it as a reset. Why do you use a very high value resistor 1M feeding the oscillator to the counter’s clock input? A CD will not blow up unless you connect the power supply backwards. May 11, Aug 5, 3. The wave is not exactly square in shape. What is wrong in this circuit?
NAND Gate Oscillator using CD | All About Circuits
You May Also Like: Aug 5, 2. Hi beenthere, I have made a new circuit. The 1M resistor between the oscillator and counter is not required and might stop the circuit from working because it will combine with stray capacitance between wires and cause the square-wave from the oscillator to be a triangle-wave at the clock input of the counter.
Aug 6, 8. Your simulation software is wrong because it shows the input going 4V higher nanx the positive supply annd 4V below ground. The circuit supply voltage is 12v.
Aug 6, Hi Audioguru, I changed the circuit as per your suggestion. Your oscillator has both inputs of the gates shorted together.
If only one input is used and the spare input is connected to the positive supply voltage then the output will be more symmetrical. Aug 5, 17 2. Aug 6, 7. NAND gate oscillator frequency calculation Posted by ukiceman in forum: The absolute max supply cf4011 a high speed 74HC is 7V and they recommed a max of 6V.
Your SIM program doesn’t know that the input of Cmos gates have input protection diodes that limit the input voltage to plus and minus 0. Your simulation sofware is also wrong when it shows the very slow switching ramps 0. You might get better results with a different arrangement of the RC components – http: Yes, my password is: You get oscillator and counter in one.
Practical Electronics/IC/ – Wikibooks, open books for an open world
I have created the following image attached NAND gate oscillator using 2 gates. Aug cf4011, I don’t know why your oscillator has a switch at its output that shorts the output to ground. The resistor is not needed if the ICs use the same power supply voltage. I read about input protection http: Solar-Powered Graphene Skin Reproduces Sense of Touch Researchers at the University of Glasgow have created a solar-powered graphene skin that can simulate the sense of touch.
The datasheets of Cmos gates shows that they switch their output in only 50ns 0. Apr 20, 15, Aug 6, 9. Your Yenka sim software doesn’t know if it is coming or going.
I still notice the output in the simulator is same. Feb 17, 4, 1, Would appreciate any feedback from you? Is it good enough to run a binary counter? The diodes at the input protection of Cmos gates clamps the input voltage to 0. Aug 5, 1.