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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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. 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 7, Would appreciate any feedback from you? Apr 20, 15, Aug 5, 2.

Dec 20, 10, 1, Aug 6, 8. No, create an account now.

Aug 6, 7. I still notice the output in the simulator is same. Aug 5, 17 2. Your Namd sim software doesn’t know if it is coming or going. Hi beenthere, I have made a new circuit.

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

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

Aug 5, 3. Discussion in ‘ General Electronics Chat ‘ started by smartyramAug 5, Your oscillator has both inputs of the gates shorted together.

You might get better results with a different arrangement of the RC components – http: Aug 6, 6. Yes, my password is: The absolute max supply for a high speed 74HC is 7V and they recommed a max of 6V.

Practical Electronics/IC/4011

The wave is not exactly square in shape. Your simulation software is wrong because it shows the input going 4V higher than the positive supply and 4V below ground.


Hi Audioguru, I changed the circuit as per your suggestion.

The resistor is not needed if the ICs use the same power supply voltage. The diodes at the input protection of Cmos gates clamps the input voltage to 0. Your name or email address: NAND gate oscillator frequency calculation Posted by ukiceman in forum: Quote of the day.

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. Your SIM cmo doesn’t know that the input of Cmos gates have input protection diodes that limit the input voltage to plus and minus 0.

You May Also Like: Do you already have an account? I nznd created the following image attached NAND gate oscillator using 2 gates.