The IS281-4 optoisolator from Isocom Components 2004 LTD is a surface-mount device with four channels.

• This device has a minimum DC current transfer ratio of: 100% @ 5mA and a maximum DC current transfer ratio of 600% @ 5mA.
• The rise and fall time of this device is: 3μs and 4μs, respectively.
• The isolation voltage is: 3750Vrms, and the maximum output voltage is 80V.
• The channel output current is: 50mA, and the continuous forward current is also 50mA.
• The alternative parts (cross-reference) include: TLP293-4, IS281-4GB, and LTV-247.
• The supply and demand status is: balanced, and the quantity per package is 2k pcs.