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  • Optocoupler Performance Comparison: NEC PS9552 vs. Avago HCPL-3120
    Both the PS9552 and HCPL-3120 are optically-coupled isolators that employ a GaAlAs LED on the input side and a photo diode, a signal processing circuit, and a power output transistor on the output side. They feature large peak output current, fast switching speeds, undervoltage lockout protection