2. DG271BDY-E3 Substitution Conclusion The DG271BDY-E3 shows improvements in switching speed and on-resistance, but its supply voltage limitations may affect its viability as a replacement for the original MAX361CSE. Key differences are: lower on-resistance (50Ω vs. 85Ω), reducing signal attenuation; faster switching times (65ns vs. 250ns/120ns), making it suitable for high-speed switching applications; however, the supply voltage supports only dual-supply ±15V (the original supported single-supply 10V–30V and dual-supply ±4.5V–±20V), which may prevent use in systems that do not support dual supplies or have fixed voltage ranges; charge injection is -5pC (original: 5pC), which may indicate better charge control, though the polarity difference requires verification of measurement methodology; higher leakage current (1nA vs. 500pA), potentially increasing error in low-power or high-impedance applications; and crosstalk performance is -100dB but tested at a lower frequency (100kHz vs. 1MHz), which may lead to different behavior at higher frequencies. Overall, if the system operates precisely at ±15V dual supply and does not strictly require low leakage current or a wide voltage range, the DG271BDY-E3 could be considered as an alternative. Otherwise, careful validation of supply compatibility and dynamic performance is advised.