8-Pin DIP Dual-Channel Low Input Current High Gain Split Darlington Output Optocoupler (Not recommend for new design. The new equivalent part number is HCPL273xM), 1000-TUBE
8-Pin DIP 1Mbit/s Dual-Channel High Speed Transistor Output Optocoupler (Not recommend for new design. The new equivalent part number is HCPL253xM), 1000-TUBE