asked on

inverting buffer cd 4049

Is there any inverting buffer from cd 4049 family that works on 3v or less than 3v? That is used to generate 429kHz square pulse from 429kHz resonator.

Zuhir Elgmati

http://focus.ti.com/docs/prod/folders/print/cd4049a.html#symbols

Zuhir Elgmati

is that usefully

jhance

As I recall, the 4046 (as well as most of the 4000 series CMOS devices) were spec'd from 3V - 12V. So you should have no trouble operating it at 3V. Regarding less than 3V, well it might work but it is out of spec.

ASKER CERTIFIED SOLUTION

public

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

SOLUTION

NetTechDude

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

NetTechDude

Ok, the above url is not working. Try these
http://www.alldatasheet.com/view.jsp?Searchword=NC7NP04
http://www.alldatasheet.com/view.jsp?Searchword=NC7NP14

73

aeltech

ASKER

I want to change the 429Khz two pin resonator as an One pin oscillator, for that can i use the NC7NP04 inverting buffer ic with the 3V baterry supply voltage.

will it give 429Khz square wave pulse at one pin?

NetTechDude

When you build this circuit: http://www.ferromel.de/tr3/ttl5.gif
Either "Bild 4" with two of the NC7NP04's inverters, maybe also with the third inverter adding another stage

Or maybe "Bild5" and you omit the last (rightmost) stage.

Then you schould get your square wave.
I don't know if you should use schmitt triggers in this application or not, so when you order chips for the prototype, try both the NC7NP04 and the NC7NP14 in this application.

Maybe you need to make the capacitors in the circuit a little larger to get stable operation.