The Si875x combines robust CMOS isolation technology with a MOSFET driver to establish a complete, isolated switch.
Input side voltages on the Si8751 are flexible from 2.25 V to 5.5 V.

Si8751 digital CMOS pin control input
Si8752 diode emulation input
10 V output with 1 mA input current
Internally generated secondary side power supply
Miller clamp cap support for reducing inductive chatter
Output supports driving DC or AC load configurations
Solid State Relays (SSR) or Electro-Mechanical Relays replacement

MOSFET & IGBT Drivers, Silicon Laboratories