Operating the device beyond these limits can cause permanent damage or severely degrade the isolation barrier over time. All ratings are measured at an ambient temperature ( TAcap T sub cap A ) of 25°C unless otherwise specified. Input LED Ratings 60 mA Peak Forward Current ( IF,pkcap I sub cap F comma p k end-sub ): 1.0 A (Pulse width , Duty cycle Reverse Voltage ( VRcap V sub cap R ): 6.0 V Power Dissipation ( PDcap P sub cap D ): 120 mW Output Phototransistor Ratings Collector-Emitter Voltage ( VCEOcap V sub cap C cap E cap O end-sub ): 30 V to 70 V (variant dependent) Emitter-Collector Voltage ( VECOcap V sub cap E cap C cap O end-sub ): 7.0 V Collector-Base Voltage ( VCBOcap V sub cap C cap B cap O end-sub ): 70 V Collector Current ( ICcap I sub cap C ): 100 mA (Continuous) Power Dissipation ( PDcap P sub cap D ): 150 mW Total Device Ratings Isolation Voltage ( VISOcap V sub cap I cap S cap O end-sub ): 5300 VRMScap V sub cap R cap M cap S end-sub VPKcap V sub cap P cap K end-sub (for 1 minute) Operating Temperature Range ( TOPRcap T sub cap O cap P cap R end-sub ): -55°C to +100°C Storage Temperature Range ( TSTGcap T sub cap S cap T cap G end-sub ): -55°C to +150°C Soldering Temperature: 260°C (for maximum 10 seconds) 4. Electrical Characteristics

: Protecting low-voltage control systems from the high voltages used in AC or DC motor drives.

The HCPL-1458 follows a standard 8-pin optocoupler layout, although it is a single-channel device, often utilizing specialized pins for low-voltage efficiency. Pin Configuration (SOP-8/DIP) VCcap V sub cap C (Case/No Connection) IFcap I sub cap F (Anode): Input LED Anode IFcap I sub cap F (Cathode): Input LED Cathode GND (Ground): Detector Ground VOcap V sub cap O (Output): Output Logic Signal NC (No Connection) VCCcap V sub cap C cap C end-sub : Detector Power Supply

If the phototransistor (Pins 4 and 5) is switching an inductive load like a mechanical relay, solenoid, or DC motor, always place a flyback diode (e.g., 1N4007) in parallel with the load to prevent high-voltage inductive spikes from destroying the transistor. De-coupling Capacitors: Place a 0.1