BUY PS2501-4 https://www.utsource.net/itm/p/11220773.html

Description: The PS2501-4 is a 4-channel photocoupler IC manufactured by NEC. It is a DIP16 package and is designed to isolate digital signals between two circuits. Features: Isolation voltage: 5000 Vrms Low input current: 0.5 mA High collector-emitter voltage: 80 V High collector current: 100 mA High common mode transient immunity: 15 kV/μs Low propagation delay: 3.5 μs Applications: Industrial equipment Automotive systems Home appliances Security systems Medical equipment (For reference only)