The IL215AT/216AT/217AT is an optically coupled pair with a Gallium Arsenide infrared LED and a silicon NPN phototransistor. Signal information, including a DC level, can be transmitted by the device while maintaining a high degree of electrical isolation between input and output. The IL215AT/ 216AT/217AT comes in a standard SOIC-8 small outline package for surface mounting which makes it ideally suited for high density applications with limited space. In addition to eliminating throughholes requirements, this package conforms to standards for surface mounted devices. The high CTR at low input current is designed for low power consumption requirements such as CMOS microprocessor interfaces. Maximum Ratings