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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NAND Gate Oscillator using CD4011

A CD will not blow up unless you connect the power supply backwards. Do you already have an account? Aug 5, 3. The diodes at the input protection of Cmos gates clamps the input voltage to 0. Apr 20, 15, May 11, 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 band a triangle-wave at the clock input of the counter.


What is wrong in this circuit? Your simulation software is wrong because it shows the input going 4V higher than the positive supply and 4V below ground.

Aug 6, 4. Is it good enough to run a binary counter? Aug 5, 1. The circuit supply voltage is 12v.

Aug 5, 2. Aug 6, Aug 6, 6. You get oscillator and counter in one.

Your oscillator has both inputs of the gates shorted together. No, create an account now. Your name or email address: Yes, my password is: The wave is not exactly square in shape. 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 resistor is coms needed if the ICs use the same power supply voltage.

CD Datasheet(PDF) – TI store

Aug 6, 8. Your SIM dc4011 doesn’t know that the input of Cmos gates have input protection diodes that limit the input voltage to plus and minus 0. Hi beenthere, I have made a new circuit. I got rid of the switch that shorts the output to ground, was using it as a reset. Aug 5, 17 2. If only one input is used cd0411 the spare input is connected to the positive supply voltage then the output will be more symmetrical.


Quote of the day. The datasheets of Cmos gates shows that they switch their output in only 50ns 0. I read about input protection http: I still notice the output in the simulator is same.

NAND gate oscillator frequency calculation Posted by ukiceman in forum: I don’t know why your oscillator has a switch at its output that shorts the output to ground. Hi Audioguru, I changed the circuit as per your suggestion. Aug 6, 5.

CD CDBE DIP14 CMOS Quad 2-input NAND gate logic chips

Aug 6, 9. You might get better results with a different arrangement of the RC components – http: Why do you use a very high value resistor 1M feeding the oscillator to the counter’s clock input?

I have created the following image attached NAND band oscillator using 2 gates.