SFQ pulses are millivolt-class whispers. Two public megaphones: SQUID stack (series stages → taller short swing) vs latching 4JL / Suzuki (underdamped hold until reset). Cartoon numbers only — not a datasheet.
SQUID: V ∼ N · V_stage, still brief. Latching: same height idea, but trigger → HIGH → reset — wider for slow samplers. Neither invents a new bit encoding.