The CNY17F-3 consists of a gallium arsenide LED optically coupled to a silicon phototransistor in a dual-in-line package.
Closely Matched Current Transfer Ratio (CTR) Minimizes Unit-to-Unit Variation
Narrow (CTR) Windows that Translate to a Narrow and Predictable Open Loop Gain Window
Very Low Coupled Capacitance along with No Chip to Pin 6 Base Connection for Minimum Noise Susceptibility
Switchmode Power Supplies (Feedback Control)
AC Line/Digital Logic Isolation
Interfacing and coupling systems of different potentials and impedances
6 pin DIP. Manufactured by Fairchild.