Dual complementary 1kHz 50% duty square waves.

[opampsmoker]

Hi,
We need the title.

We think that the cheapest way is with a UCC28C45 into a NOT gate.
As attached.
Can you think of a cheaper way?

We need the square waves +5v to 0V.

(LTspice and pdf attached)

 

[BradtheRad]

Apply 2kHz to a toggle flip-flop (clock-divide-by-2). Outputs Q and Not-Q are dual complementary, 50 percent duty cycle 1kHz.

 

[Audioguru]

A CD4047 IC has an RC astable oscillator and a divide frequency by 2 to produce a perfect 50-50 squarewave. It has two squarewave outputs with one of them inverted.

 

[d123]

SN or HC or CD4049 or 4069/some hex inverter ring oscillator with 2 resistors and one capacitor. Three not gates for oscillator, another to buffer output from not #2, could use spare two nots to buffer not #3. Vout should be 0.05V and 4.95V. Unbuffered hex inverters are supposed to be best for oscillators. Practice with trimpots to get 1kHz is quickest route.

 

[KlausST]

A tiny microcontroller
A dual comparator

Klaus