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, 8. Aug 6, 6. Aug 6, The diodes at the input protection of Cmos gates clamps the input voltage to 0. I have created the following image attached NAND gate oscillator using 2 gates.
You get oscillator and counter in one. The wave xmos not exactly square in shape. Is it good enough to run a binary counter? Aug 6, 5. Quote of the day. You May Also Like: The datasheets of Cmos gates shows namd they switch their output in only 50ns 0.
Aug 7, Your name or email address: I still notice the output in the simulator is same. Your oscillator has both inputs of the gates shorted together. Hi beenthere, I have made a new circuit.
Aug 5, 3. Yes, my password is: Why do you use a very high value resistor 1M feeding the oscillator to the counter’s clock input?
Feb 17, 4, 1, Aug 6, 9. No, create an account now.
Aug 6, 4. Discussion in ‘ General Electronics Chat ‘ started by smartyramAug 5, Would appreciate any feedback from you?
CD Datasheet(PDF) – TI store
Apr 20, 15, Aug 5, 1. Aug 5, 17 2. I don’t know why your oscillator has a switch at its output that shorts the output to ground.
The 1M resistor vd4011 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.
Do you already have an account? Dec 20, 10, 1, The absolute max supply for a high speed 74HC is 7V and they recommed a max of 6V.
Practical Electronics/IC/ – Wikibooks, open books for an open world
I got rid of the switch that shorts the output to ground, was using it as a reset. A CD will not blow up unless you connect the power supply backwards. Maybe it will be simpler to use Your Yenka sim software doesn’t know if it is coming or going.
Solar-Powered Nannd 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. May 11, Your SIM nsnd doesn’t know that the input of Cmos gates have input protection diodes that limit the input voltage to plus and minus 0.
CD4011 CD4011BE DIP14 CMOS Quad 2-input NAND gate logic chips
Your simulation software is wrong because it shows the input going 4V higher than the positive supply and 4V below ground. I read about input protection http: The resistor is not needed if the ICs use the same power supply voltage. The circuit supply voltage is 12v. Hi Audioguru, I changed the circuit as per your suggestion.
If only one input ccmos used and the spare input is connected to the positive supply voltage then the output will be more symmetrical. Aug 6, 7.
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: Aug 5, 2. NAND gate oscillator frequency calculation Posted by ukiceman in forum: What is wrong in this circuit?