Result
splitter
splitter
splitter
Answered
Both margin edges served with a conformal interval from a held-out calibration split.
Fluxon splitter. Same heads, a visibly tighter band -- the band is fitted per quantity, not assumed.
What this margin is, exactly
Measured under reference feeder F0, the reference drive. width varies up to 2.17x across nine defensible reference feeders, and 2.7x (jtl) / 6.0x (splitter) across designs within the operating band. This value is for THIS design under feeder F0; it is not a property of the cell type.
interval at alpha 0.1 · calibration n=1200 · width is derived as hi − lo and carries the sum of both edge half-widths, so it can never contradict the edges beside it
fluxus-s · captured from the same service the API serves · reproduces the JoSIM oracle, not silicon; nothing here is fab-calibrated. The cell library targets MIT-LL SFQ5ee+ and is literature-reconstructed, not foundry GDS. Margins are served for 3 of 8 library cells.