A1458 Optocoupler Datasheet
The datasheet's typical rise/fall times are 4µs. To achieve this:
The is a general-purpose, single-channel optocoupler consisting of a Gallium Arsenide (GaAs) infrared emitting diode optically coupled to a silicon NPN phototransistor. It is packaged in a compact 4-pin DIP (Dual In-line Package) with surface-mount (SMD) option available. a1458 optocoupler datasheet