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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Would appreciate any feedback from you? Your simulation software is wrong because it shows the input going 4V higher than the positive supply and 4V below ground. Why do you use a very high value resistor 1M feeding the oscillator to the counter’s clock input?
100pcs/lot CD4011BE CD4011 DIP-14 Quad 2 Input CMOS NAND Gate
I got rid of the switch that shorts the output to ground, was using it as a reset. Do you already have an account?
Quote of the day. Feb 17, 4, 1, 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.
CD CDBE QUAD 2-INPUT NAND GATE IC
Apr 20, 15, No, create an account now. I read about input protection http: Dec 20, 10, 1, NAND gate oscillator frequency calculation Posted by ukiceman in ccmos Aug 5, 3.
The datasheets of Cmos gates shows that they switch their output in only 50ns 0. The circuit supply voltage is 12v. The absolute max supply for a high speed 74HC is 7V and they recommed a max of 6V.
You might get better results with a different arrangement of the RC components – http: The diodes at the input protection of Cmos gates vd4011 the input voltage to 0.
CD4011 – Quad 2-In NAND Gate
Aug 6, 6. Your name or email address: Hi Audioguru, I changed the circuit as per your suggestion. Aug 5, 2. You May Also Like: Aug 6, 8. Aug 6, 7. Hi beenthere, I have made a new circuit. Aug 6, I don’t know why your oscillator has a switch at its output that shorts the output to ground. You get oscillator and counter in one. Aug 6, 5.
Practical Electronics/IC/ – Wikibooks, open books for an open world
Is it good enough to run a binary counter? The resistor is not needed if the ICs use the same power supply voltage. I still notice the output in the simulator is same.
Your simulation sofware is also wrong when it shows the very slow switching ramps 0. The 1M resistor between dd4011 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.
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