Supply (V) Max. Supply (V) TX Swing (Vppd) Area (mm2) FoM (pJ/b) @Min Rate FoM (pJ/bit) @Max Rate [24] 350 0.2 0.8 Open drain None Half rate External DC–DC 1.3 3.2 0.1–0.15 N/A N/A 26.875 [22] 250 0.65 5 Current None 1/5 rate 1 DC–DC 0.9 2.5 0.1–0.3 N/A ...