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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I read about input protection http: Would appreciate any feedback from you?
Aug 5, 1. I don’t know why your oscillator has a switch at its output that shorts the output to ground.
NAND gate oscillator frequency calculation Posted mcos ukiceman in forum: Aug cd44011, 2. Why do you use a very high value resistor 1M feeding the oscillator to the counter’s clock input? The resistor is not needed if the ICs use the same power supply voltage. Cos get oscillator and counter in one. 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.
Aug 6, 4. Do you already have an account? You might get better results with a different arrangement of the RC components – http: Discussion in ‘ General Electronics Chat ‘ started by smartyramAug 5, The wave is not exactly square in shape.
Yes, my password is: Aug 6, 8. Hi Audioguru, I changed the circuit as per your suggestion.
Aug 6, Aug 7, Dec 20, 10, 1, Aug 6, 9. No, create an account now. The datasheets of Cmos gates shows that they switch their output in only 50ns 0.
Hi beenthere, I have made a new circuit. May 11, Aug 5, 17 2. 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. I still notice the output in the simulator is same. Maybe it will be simpler to use Your simulation software is wrong because it shows the cmps going 4V higher than the positive supply and 4V below ground.
Your Yenka sim software doesn’t know if it is coming or going. Aug 5, 3.
If only one input is used and the spare input is connected to the positive supply voltage then the output will be more symmetrical. Your simulation sofware is also wrong when it shows the very slow switching ramps 0.
CD CDBE DIP14 CMOS Quad 2-input NAND gate logic chips
A CD will not blow up unless you connect the power supply backwards. What is wrong in this circuit? Your oscillator has both inputs ccmos the gates shorted together. The absolute max supply for a high speed 74HC is 7V and they recommed a max of 6V.
You May Also Like: Your name or email address: Quote of the day. Feb 17, 4, 1, I have created the following image attached NAND gate c4011 using 2 gates. The diodes at the input protection of Cmos gates clamps the input voltage to 0. Aug 6, 5.