v3  11 0 pulse(0 5 0 0 0 10u 20u)
v2  6 0 pulse(0 5 0 0 0 10u 20u)
v1  4 0 pulse(0 5 0 0 0 10u 20u)
.model u3 d_and
.model u3adc adc_bridge(in_low=0.8 in_high=2.0)
.model u3dac dac_bridge(out_low=0.25 out_high=5.0 out_undef=1.8 t_rise=0.5e-9 t_fall=0.5e-9)
.model u2 d_or
.model u2adc adc_bridge(in_low=0.8 in_high=2.0)
.model u2dac dac_bridge(out_low=0.25 out_high=5.0 out_undef=1.8 t_rise=0.5e-9 t_fall=0.5e-9)
.model u1 d_inverter
.model u1adc adc_bridge(in_low=0.8 in_high=2.0)
.model u1dac dac_bridge(out_low=0.25 out_high=5.0 out_undef=1.8 t_rise=0.5e-9 t_fall=0.5e-9)
