Digital Optical TTL Coupler Circuit Diagram

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Digital Optical TTL Coupler Circuit Diagram. TTL converter options for underwater photography, TTL converters and strobes that support optical TTL. For higher speed applications, up to 1-MHz NRZ, the Schmitt-trigger output HllL series optoisolator provides many features. The 1.6-mA drive current allows fan-in circuitry to drive the IRED, while the 5-V, 270-0 sink capability and lOOns transition times of the output add to the logic coupliug flexibility.