BUY HCPL2631 https://www.utsource.net/itm/p/11224693.html

Description: The HCPL2631 is an optically coupled logic gate with a GaAsP LED input and an open collector output. Features: -High speed: tPHL/tPLH = 3.5/3.5 ns -High noise immunity: VNIH = 30 kV/μs -Low input current: IIN = 1.6 mA -High collector-emitter voltage: VCEO = 30 V -Low input-output coupling capacitance: CIO = 0.5 pF -High common-mode transient immunity: CMR = 30 kV/μs Applications: -Industrial control -Power supplies -Telecommunications -Computer peripherals -Consumer electronics (For reference only)