1458 Optocoupler Datasheet ((exclusive))

Optocouplers are essential components in modern electronics, providing electrical isolation between low-power control circuits and high-voltage power systems. Among the various options available to designers, the 1458 optocoupler—often manufactured as the HCPL-1458 or similar proprietary variants—stands out for its specific balance of speed, isolation voltage, and reliability.

: Due to its hermetically sealed package, it is often selected for environments where moisture or contaminants would degrade standard plastic packages. Distinguishing the 1458 Family

range of , allowing compatibility with both legacy 5V and modern 3.3V logic systems.

Ideal for low-voltage, energy-efficient designs.

The datasheet will list typical applications, but understanding why the HCPL-1458 is a good fit is key. 1458 optocoupler datasheet

: Usually NC (No Connection) or specific anode/cathode pins. Pin 2 : Anode (Input LED). Pin 3 : Cathode (Input LED). Pin 5 : GND (Output side). Pin 6 : Vout (Output Signal). Pin 7 : NC or Enable. Pin 8 : Vcc (Supply Voltage). Common Applications

For the purpose of this guide, we will analyze the specifications typical of a standard transistor-output optocoupler that carries a 1458-style marking.

: Applied in data communication systems and automotive electronics. Note on Potential Confusion If your project involves the MC1458 Dual Op-Amp Go to product viewer dialog for this item.

: Available in an 8-pin hermetically sealed package (SOP-8 or similar), protecting internal components from environmental factors. Electrical Specifications Typical/Max Value Forward Current ( IFcap I sub cap F ) 20 mA (Max) Output Current ( ICcap I sub cap C ) Operating Temperature -55°C to +100°C Propagation Delay 35 ns at 10 kHz Common Applications Distinguishing the 1458 Family range of , allowing

Unlike traditional couplers, the HCPL-1458 is optimized for modern 3.3V and 5V digital systems, offering high common-mode rejection (CMR) and low propagation delay. Key Features of the HCPL-1458

: Optimized for high-speed and low-voltage operations. Voltage Supply ( VCCcap V sub cap C cap C end-sub

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or comparing it to an alternative component for a specific project, please let me know! Share public link : Usually NC (No Connection) or specific anode/cathode pins

Translating the datasheet into a real-world circuit is the final step. Here's a simple procedure based on the information you've gathered.

| Parameter | Symbol | Rating | Unit | | :--- | :---: | :---: | :---: | | | | | | | Forward Current | $I_F$ | 50 | mA | | Peak Forward Current | $I_FM$ | 1.0 | A | | Reverse Voltage | $V_R$ | 6 | V | | Output (Detector) | | | | | Collector-Emitter Voltage | $V_CEO$ | 35 - 80* | V | | Emitter-Collector Voltage | $V_ECO$ | 6 | V | | Collector Current | $I_C$ | 50 | mA | | Total Device | | | | | Isolation Voltage | $V_ISO$ | 5000 | Vrms | | Operating Temperature | $T_opr$ | -30 to +100 | °C | | Storage Temperature | $T_stg$ | -55 to +125 | °C |

Ground loop elimination in high-speed data transmission lines.

Used to isolate sensitive computer circuits from peripheral equipment. Summary Table: Key Specifications Value (Typical) Operating Voltage VCCcap V sub cap C cap C end-sub 3.0 V - 5.5 V Propagation Delay 35 ns (10 kHz) Common Mode Immunity Input Logic TTL/CMOS Compatible Output Type Open Collector Package Conclusion