True if both NFETs are off, but I don't like the idea of having a PFET gate floating when one NFET is on. Noise/glitches could cause spurious conduction of the 'off' PFET, hence shoot-through.when the lower MOSFETS are off, it doesn't matter what the gate bias is on the upper MOSFETs.
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If floating PFET gates can be tolerated and the NFETS always have an active drive then the circuit could be reduced to its bare bones. Simulation shows the switch-off spikes being clamped close to the rails by the body diodes.
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