A1458 Optocoupler Datasheet 🔖
Based on standard optocoupler architecture (an infrared LED optically coupled to a phototransistor), the A1458 datasheet should prioritize these parameters:
While specific manufacturers (like Avago, Broadcom, or Toshiba) may have slight variations, here are the standard electrical characteristics you can expect from an A1458 datasheet: 1. Input Side (Emitter) Typically 20mA to 50mA (Absolute Maximum). Forward Voltage ( VFcap V sub cap F ): Approximately 1.2V to 1.5V at 10mA. Reverse Voltage: Usually rated around 5V. 2. Output Side (Detector) Collector-Emitter Voltage ( VCEOcap V sub cap C cap E cap O end-sub
Ideal for high-speed data links like RS-232, RS-485, or CAN bus isolation. Replacement and Equivalents a1458 optocoupler datasheet
Need help comparing the A1458 to a modern drop-in replacement? Let me know your specific use case (e.g., motor drive, SMPS feedback, or Arduino isolation).
The output is fully TTL-compatible, allowing for direct interface with 3.3V or 5V logic families. Based on standard optocoupler architecture (an infrared LED
Above 25°C, derate total power by approximately 2.5 mW/°C. At 100°C, P_tot drops to ~150 mW.
Disclaimer: This blog post is for educational purposes. Always consult the official manufacturer datasheet for the specific A1458 variant you are using, as specifications can vary between brands. Reverse Voltage: Usually rated around 5V
If you are looking to understand the electrical characteristics, pinouts, and practical applications of the A1458, you have come to the right place.
The A1458 series is commonly housed in a compact, surface-mount or through-hole DIP-8 package footprint. The layout isolates the sensitive input emitter circuitry from the output detector circuitry using an internal physical gap.
), which is vital in noisy industrial environments (typically
| Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | NC | No Connect | | 2 | ANODE | Anode (+) of the input LED | | 3 | CATHODE | Cathode (-) of the input LED | | 4 | NC | No Connect | | 5 | GND | Ground connection for the output side | | 6 | VO | Output Voltage (open-collector output) | | 7 | VCC | Positive supply voltage for the output side | | 8 | GND | Ground connection for the output side |