BUY HCPL-J456 https://www.utsource.net/itm/p/247107.html
SCHMITT-TRIGGER-OUTPUT OPTOCOUPLER
Manufacturer: Agilent Description: Optocoupler, Transistor Output, 8-Pin SOIC Features: - High speed: tPHL/tPLH = 4.5/4.5 ns (typ) - High isolation voltage: Viso = 5000 Vrms - Low input current: Ii = 1.6 mA (max) - Low output saturation voltage: VCE(sat) = 0.4 V (max) - Compact package: 8-pin SOIC Applications: - Industrial control - Power supply control - Motor control - Signal transmission between circuits of different potentials and impedances (For reference only)