TIL920 series is a single/dual/quad channel optocoupler produced by Texas Instruments. This series of products has AC signal input, gallium-arsenide diode infrared source, optically coupled to silicon N-P-N phototransistor, optional single, dual, four channels, optional three current transfer ratios, high-voltage electrical isolation, plastic dual-in-line packages, UL listed-file number E65085 etc.
This document provides technical specifications for the TIL920, TIL921, and TIL922 series of optocouplers. These devices consist of two reverse-parallel connected gallium-arsenide light-emitting diodes coupled to a silicon n-p-n phototransistor per channel, designed for AC-input applications.
Suffix A indicates a minimum current transfer ratio of 50%, while suffix B indicates 100%.