Low frequency TTL oscillator

Posted on Nov 10, 2012

This oscillator uses standard inverters, one resistor and one capacitor, and has no minimum operating frequency. R and C must be chosen such that currents into the gates are below recommended operating limits and that leakage current into the gates and into C are small in comparison with the current in R also the output should be buffered (13) to prevent variations in load affecting frequency.

Low frequency TTL oscillator
Click here to download the full size of the above Circuit.

This circuit may also be used to square up slowly changing logic levels by use.of multi input gates (NANDS, NORS Etc).

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