4060BD and VDD pin

[Huby]

Hi ! Im trying to measure if i get the right voltage on my 4060 and 4040BD but the VDD pin is hidden.

How to activate it or better how to measure the voltage. btw. i have 3 different dc voltage sources on my schematics.

I posted the *ms12 file in attach if someone can take a look.

Huby

[Tayyab_R]

Hi Huby,

To see which hidden pins each component has, you can double-click on it and then go to the Pins tab. On the bottom it shows you the hidden pins. Most of these components have VDD and VSS. You need to place atleast one instance of each on the design. I noticed you did not have a VSS placed on the design. That is definetely a problem.I have placed one on the design.

If you want to supply a different voltage level to a specific component which has hidden power pins, you can place another DC Power source on the design and use a global connector to connect it to the component. 

Take a look at the power source I placed on the design. I connected it to a Global Connector and named the connector VG. Now if I want to use this to power a digital component, I simply need to go in Pins tab of the Component and connect the VDD pin to this Net.

Hope this helps.

[Huby]

Thank you for your guidance but i think that there must be some other problem because the 4060 isn't oscillating.

If i connect function generator to test the oscillation everything works OK but if i connect 3mhz osc to pin 10 and 11 of 4060 there's no signal. According to datasheet 10 and 11 are input pins for osc and they are connected with MOhm resistor and this is working in "real" pcb.

Can you please be so kind and test if this part is working.

I tested it on new design and on orginal schematics.

Maybe i need to set some instructions to quartz osc ?.. Just guessing .

Huby

[Huby]

Well, this is newest situation.
I change to the 4060BT ( not BD ) 15V and i test it on separate design. It works as it should.
Then i put the same part into my existing schematics and, you guess it... it doesn't work. To be more precise, it starts to oscillate but there is no signal. I disconnected it from 4040 and i test it alone ( on whole schematics ) and the situation is the same. It starts to oscillate but there no signal. I also try with capacitors to gnd, but nothing.

Is this kind of schematics to heavy for multisim ?
If so, then where can i find some better program to simulate my schematics ?

Huby