Low voltage and low frequency oscillator ????

[Rfboy]

Hi guys,
I nedd to develop an sqare wave oscillator in the frequency range of about 400 KHz up to 1.5 MHz with only 2 V of power supply.!!!!
I have tested the standard 74hc4046 but the minimum power supply for the oscillator stage is 3 V.....
Please give me some suggestion and good idea !!!!!!

Thank you

 

[flatulent]

lmc555

The LMC555 **broken link removed** will operate down to 1.5 V. Use the control input pin to vary the frequency if you want to make a VCO.

 

[glasstire]

Could try a processor with a crystal based FLL oscillator like the TI MSP430. Will go down to 1.8V.

 

[MonkeyBusiness]

You can use any Schmitt inverter logic device. For instance NC7NZ14 from Fairchild will operate down to 1.8V.
You'll need a feedback resistor and a capacitor in the input.

 

[bunalmis]

You can build astable multivibrator using two transistor.