MisterBill2
hi yes i will scheck that on pdf source and find some info! thank you

 

What do you mean with "unstable"?

My suggestion: throw everything out the window and start from scratch. And I mean it.

My suggestion is to increase the value of the 2.2k feedback resistor to at least 10K and see what that does for you. Excess feedback will cause all kinds of problems.

 

Hello,

The NXP datasheet shows some more values:



Also a schematic for a crystal oscillator is given:



Bertus

 

The problem is probably that the solderless breadboard has too much capacitance and inductance between all its rows of contacts and its wires all over the place.

 

Hello,

The NXP datasheet shows some more values:

View attachment 200180

Also a schematic for a crystal oscillator is given:

View attachment 200181

Bertus

One more question that has not been asked is "have you grounded the reset input, pin #12? An open CMOS input will cause all kinds of unpredictable operation.

 

atferrari Hi i mean that the frequency varied from 31khz to 34Khz on pin1 and should be 1,953Mhz!

How did you arrive at this frequency on pin-1?
32MHz divided by 4096 is 7.8125KHz.

Can you confirm the exact part number of your 4060 device?
Or show us a well focused photo of the markings on the device.

BTW, DVM4100 can only measure 1MHz and lower.

 

MrChips
Hi i ve found the problem! i have put a 12vdc on pin 16 and that burned the ic! il will try a +5V with a 7805!
MisterBill2
Hello yes the datasheet shows the voltage max 7vdc I will try with 5vdc thank you!
Audioguru again
hello yes ill will take you informed with a new ic! thank you!
bertus
hi yes a 6v 35mhz max! thank you

 

MrChips
Hi i ve found the problem! i have put a 12vdc on pin 16 and that burned the ic! il will try a +5V with a 7805!
MisterBill2
Hello yes the datasheet shows the voltage max 7vdc I will try with 5vdc thank you!
Audioguru again
hello yes ill will take you informed with a new ic! thank you!
bertus
hi yes a 6v 35mhz max! thank you

I have been so used to most CMOS IC devices being OK with 12 and 15 volts. And really, a CD4060 should be OK at 35 Mhz according to the published specs.

 

Hello,

@MisterBill2 , The OP is using a HC version of the 4060.
That must not be used on 12 or 15 Volts:


Bertus

 

Hello,

@MisterBill2 , The OP is using a HC version of the 4060.
That must not be used on 12 or 15 Volts:
View attachment 200431

Bertus

EXACTLY, and that is why I commented, because the more common CMOS devices, INCLUDING the CD4060 and the MC14060 can work with the higher voltages.
Besides that, the same chart has already been posted at least once already. 74HC series CMOS is DIFFERENT from the other varieties. That was the reason for my comment.

 

MisterBill2
hello its not a cd4060 but a hc4060 and can work with a 32mhz! ive tried that just now!

 

MisterBill2
hello its not a cd4060 but a hc4060 and can work with a 32mhz! ive tried that just now!

I AM TOTALLY AWARE that the device is a 74HC4060, and I was commenting that it WAS DIFFERENT than other CMOS devices.. Why remind me of what I have just stated??? In fact, stated in two different posts.
I also went back to the data book and I see that some brands of CD4060 do not work at 35 MHZ. With a 5 volt supply they work at 32 KHZ., ut to possibly 200 KHZ.

 

Yes, you destroyed the 74HC4060 IC because its absolute maximum Vcc is 7V.
A solderless breadboard cannot be used with radio frequencies and low value capacitors.
Your capacitor values were too small anyway.

RCA used to sell CPUs and CMOS for 10V . See http://www.ti.com/product/CD4020B parts up to 15V

 

An old CD4060 works with a power supply that is 3V to 15V. its output current is low.
A 74HC4060 works with a 2V to 6V power supply (but needs 6V for up to 35MHz) and its output current is fairly high.

 

An old CD4060 works with a power supply that is 3V to 15V. its output current is low.
A 74HC4060 works with a 2V to 6V power supply (but needs 6V for up to 35MHz) and its output current is fairly high.

Thus the power should be 6 volts and not 12 volts.

 

MisterBill2 the HC4060 works with a 32mhz quartz at 5Vdc and can deliver on pin7 2mhz! the problem more than voltage was a default on the capacitor of 100nf between pin16 and ground! thanks for helping me understanding this IC!
best regards!

 

Hello,

To help understanding the use of decoupling capacitors, have a look at this thread:
Decoupling or Bypass Capacitors, Why?

Bertus

 

MisterBill2 the HC4060 works with a 32mhz quartz at 5Vdc and can deliver on pin7 2mhz! the problem more than voltage was a default on the capacitor of 100nf between pin16 and ground! thanks for helping me understanding this IC!
best regards!

OOPS! Sorry about not thinking about the need for a local bypass capacitor. Yes, they are quite important, especially at higher frequencies, and always with TTL devices, and those that emulate TTL devices.

 

no problems its ok!