This oscillator provides a 1 MHz rectangular signal determined by the capacitors used. The circuit must be powered by a voltage of 5 V. The maximum frequency depends on the logic used.
The circuit shown is from National Semiconductor, having been found in the 1994 Linear Application...
We found this circuit in a 70s American documentation. The integrated circuits are from that time....
This circuit is from a 1978 French magazine Electronique Pratique. The magazine no longer exists, but...