The RV1S9993A and RV1S9994A are optically coupled isolators that integrate an AlGaAs LED on the input side and a photodiode with a signal‑processing circuit and power MOSFETs on a single output‑side chip. These devices are designed for high common‑mode transient immunity (CMTI), high‑speed switching, and reliable operation at ambient temperatures up to TA = 125°C. They are suitable for driving IGBT, GaN FET, SiC FET, and Si power MOSFET gate drives.