A1458 Optocoupler Datasheet

Integrating the A1458 requires strict attention to the 8-pin mapping layout to prevent reverse polarity failures or unbuffered floating logic gates.

Measures the chip's ability to reject fast voltage transients across the isolation barrier without triggering false outputs. 1.2 mA (Maximum)

The official datasheet provides the "Absolute Maximum Ratings" and "Recommended Operating Conditions." The following are the key specifications collated for the A1458 (HCPL-A1458/HCPL-1458 series):

| Parameter | Symbol | Conditions | Min | Typ | Max | Unit | |-----------|--------|-------------|-----|-----|-----|------| | Collector-Electron Breakdown | BV_CEO | I_C = 100 μA, I_F = 0 | 80 | - | - | V | | Emitter-Collector Breakdown | BV_ECO | I_E = 100 μA | 6 | - | - | V | | Dark Current (Leakage) | I_CEO | V_CE = 20V, I_F = 0, Ta=25°C | - | 10 | 100 | nA | | Dark Current at 100°C | I_CEO | V_CE = 20V, I_F = 0, Ta=100°C | - | 1 | 10 | μA | a1458 optocoupler datasheet

These graphs show how temperature affects speed and power consumption. 🚀 Common Applications

(minimum) immunity, protecting against high voltage transients in industrial environments. Guaranteed isolation (for 1 minute) ensures safe operation. Low Power Consumption: Operates at low current ( Wide Supply Voltage Range: Compatible with

In the world of electronics, galvanic isolation is a critical requirement for safety, noise immunity, and signal integrity. Optocouplers (also known as opto-isolators) are the backbone of this technology. Among the myriad of components available, the stands out for its specific balance of speed, current transfer ratio, and isolation voltage. Integrating the A1458 requires strict attention to the

) : Max consumption of 1.2 mA per channel for power-sensitive layouts. Pinout Configuration and Packaging

: 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.

| Pin No. | Name | Description | |---------|-------------|----------------------------| | 1 | Anode (A) | Positive input of LED | | 2 | Cathode (C) | Negative input of LED | | 3 | Emitter (E) | Phototransistor emitter | | 4 | Collector (C)| Phototransistor collector | Optocouplers (also known as opto-isolators) are the backbone

: The HCPL-A1458 serves as an ideal intermediate buffer to drive the power stages of AC motor drives, solar inverters, and switching power supplies.

Based on the datasheet information from various technical sources, the HCPL-A1458 boasts several performance metrics designed for modern, efficient electronics: