A1458 - Optocoupler Datasheet
The A1458 is an optoisolator featuring an input LED optically coupled to an integrated high-gain, high-speed photodetector. Unlike traditional phototransistor couplers, the A1458 utilizes a photodiode coupled to a high-gain linear amplifier, allowing for high-speed operation (up to
, making it ideal for high-noise environments where voltage spikes are common. Broad Voltage Compatibility : Operates within a wide cap V sub cap C cap C end-sub 3.0V to 5.5V
The A1458 series optocouplers are typically offered in two compact 8-pin packages:
: Place a 0.1µF ceramic capacitor as close as possible between pin 7 (VCC) and pin 5/8 (GND) to ensure stable operation and minimize noise coupling. a1458 optocoupler datasheet
An analytical breakdown of the technical specifications, pinout architecture, and circuit implementations found within the official guides engineers in optimizing its usage. Technical Specifications and Core Features
This section is crucial for reliable circuit operation. It gives the voltage, current, and temperature ranges where the device's performance is guaranteed.
Parameter / Feature | Standard A1458 | HCPL-1458 | HCNW1458 :--- | :--- | :--- | :--- | Approx. 100% | Higher than A1458 | Excellent (high gain) Response Speed | Slower (basic) | Faster than A1458 (high-speed logic output) | Very fast (high-speed) Isolation | Standard | Standard | Superior (high-voltage, extended creepage) Common Mode Transient Immunity | Good | Good | Excellent (up to 15kV/μs min) Number of Channels | Single-channel | Single-channel | Dual-channel Operating Temperature | -40°C to +100°C (Standard) | 0°C to 70°C (Guaranteed) | -40°C to +100°C (Wider range) Key Applications | General purpose (LED, relay control) | Switch-mode power supply feedback, digital signal isolation | High-speed data communication, motor drives, automotive The A1458 is an optoisolator featuring an input
): Typically operates between 4.5V and 5.5V (TTL compatible).
: Contains a GaAsP LED that emits infrared light when current is applied. Output Side
Several sources provide the official PDF document: Parameter / Feature | Standard A1458 | HCPL-1458
The (often referred to as A1458 ) is a high-speed, single-channel logic gate optocoupler manufactured by Broadcom (formerly Avago). It is designed to bridge the gap between high-speed digital circuits while providing excellent electrical isolation. ⚡ Key Specifications
: Provides isolation for power transistor gates (MOSFET/IGBT) to protect control circuitry from high-voltage spikes. Computing & Data
