The 1458 optocoupler is a high‑speed, transistor‑output device widely used for signal isolation in digital and low‑power analog circuits. Below is a concise yet comprehensive datasheet‑style summary.
provided by manufacturers like Broadcom (formerly Avago/Agilent). Heisener Electronics or a specific circuit example for this component? MC1458 - STMicroelectronics 1458 optocoupler datasheet