A1458 Optocoupler Datasheet Fix Online

: Rated for 3750 Vrms to 5300 Vrms depending on the specific variant and package .

Used in solar and wind inverters to safely isolate control circuits from high-voltage DC or AC grid voltages.

Offers electrical isolation up to 5300 VRMScap V sub cap R cap M cap S end-sub (with variations down to 3750 VRMScap V sub cap R cap M cap S end-sub a1458 optocoupler datasheet

| Parameter | Symbol | Value | Unit | Condition/Note | | :--- | :--- | :--- | :--- | :--- | | | IF | 20 (Max) | mA | DC Input current | | Forward Voltage | VF | 1.3 (Typ) / 1.7 (Max) | V | IF = 10 mA | | Peak Transient Current | IF(trans) | 1 | A | Pulse width ≤ 1 µs | | Supply Voltage (Output) | VCC | 4.5 - 5.5 (Recommended) | V | -- | | Output Supply Voltage Range | VCC | 0 - 20 | V | Absolute Maximum rating | | Output Current | IO | 8 (Max) | mA | -- | | High Level Output Current | IOH | -0.4 to -8 | mA | -- | | Low Level Output Current | IOL | 8 | mA | -- | | Data Rate | -- | 50 (Max) | MBd | -- | | Propagation Delay (tPLH) | -- | 45 (Max) | ns | -- | | Propagation Delay (tPHL) | -- | 45 (Max) | ns | -- | | Current Transfer Ratio (CTR) | -- | 15% to 30% | % | -- | | Isolation Voltage (Withstand) | VISO | 5000 (Min) | Vrms | -- | | Common Mode Rejection (CMR) | | 15,000 (Min) | V/μs | For HCPL-1458 | | Operating Temperature | TA | -40 to +100 | °C | -- | | Storage Temperature | TSTG | -55 to +125 | °C | -- | | Lead Solder Temperature | -- | 260 | °C | For 10 sec (DIP package) |

: The output of the HCPL-1458 is an open-collector transistor, meaning it can only sink current to ground. It cannot source current. Therefore, you must always connect a pull-up resistor from the output pin (Vo) to your positive logic supply voltage (VCC). The value of this resistor determines the rise time of the output signal (lower resistor = faster speed but higher power consumption). : Rated for 3750 Vrms to 5300 Vrms

The A1458 is typically housed in a space-saving or a standard 8-pin Dual In-line Package (DIP-8) .

Inverter topologies, solar power converters, and variable-frequency motor drives utilize High-Power MOSFETs or IGBTs. The A1458 isolates the high-voltage power stage while sending sharp, distortion-free switching control pulses down to the gate-driver circuit. Single Channel, High Speed Optocouplers Technical Data It cannot source current

: High-speed gate driving for IGBTs and Power MOSFETs in industrial inverters .

The A1458 is an optically coupled isolator consisting of a GaAsP LED and an integrated high-gain photodetector. It is designed for high-speed logic gate isolation and is commonly used in industrial and telecommunication environments to provide galvanic isolation while maintaining signal integrity. Specification Speed (Propagation Delay) 8 ns max (tPHL/tPLH) Isolation Voltage Supply Voltage (VCC) 3.0V to 5.5V Common Mode Rejection (CMR) 50 kV/µs minimum Current Consumption (ICC) 1.2 mA max (Low power) Operating Temperature -40°C to +105°C (Extended range) Package Types 8-Pin DIP, SOIC-8 / SOP-8 Core Features

The A1458 is often associated with a general-purpose phototransistor output optocoupler, similar in class to the 4N35 or PC817 but with specific parametric differences. Always refer to the manufacturer’s official datasheet for the exact revision you are using (e.g., from Vishay, Everlight, or a generic Chinese brand). This article synthesizes typical specifications for the A1458 series.