levelshifter with symmetric output

[zitty]

Hey all,

Im looking for a levelshifter that shifts a digital signal from -2 to 0 V up to -2 to 2V.
The output should be as symmetrical as possible for rising and falling edges.

I thought about using a latch but that is not giving me a symmetrical output.

regards zitty.

 

[alexan_e]

What is the frequency range you intend to use?

 

[zitty]

What is the frequency range you intend to use?

very slow. only several khz.
but non the less the edges should be very steep.

 

[erikl]

Im looking for a levelshifter that shifts a digital signal from -2 to 0 V up to -2 to 2V.
The output should be as symmetrical as possible for rising and falling edges.

I thought about using a latch but that is not giving me a symmetrical output.

Here's a std. level-shifter: an inverter on the LV side plus a FF on the HV side:

With symmetrical P2/N2 = P3/N3 it should achieve symmetrical output (P2=P3 weaker than N2=N3). If the output needs to drive a heavy load, add an additional inverter or buffer.