32 kHz square wave circuit

[ced]

I don't know any reference of 32kHz oscillator chip , I thought it would be quite expensive around 10 or more $, that's why I planned to do it with discrete components.
Have you got a cheap reference for a 32 Khz chip ?
Otherwise I'll try to switch the HCT4060 with a HC4060 .
Thanks,
Cédric

 

[ced]

Switching the 74HCT4060 to a 74HC4060 hasn't solved the problem .
Maybe it's the signal rising and falling time that's too long .
On my scope I would say that it's between 0.4 and 0.6 us .
Anyway, it's not very accurate as, I get this measure with the fastest sampling rate without averaging of my scope , and the two vertical lines that mark the beginning and end of the rise are only 2 pixels far one from each other .
Maybe there's some way to get the signal steeper , with some schmitt trigger or something else ?

 

[ced]

I found the clue,after placing a schmitt trigger between the 32kHz circuit and the 4060 input, it works now fine .

 

[audioguru]

The 74HC4060 already has an oscillator. Philips' datasheet has the schematic for a crystal oscillator. Why didn't you use it as a crystal oscillator?

 

[ced]

I don't use it because I've never read all the datasheet
That's a nice feature actually,
Thanks Audioguru,
Cédric