1458 Optocoupler Datasheet File
Frequently used to safely step control signals up to the isolated gate driver stages that manipulate IGBTs and Power MOSFETs in power converters.
Providing isolated feedback in switching power supplies.
Supports high-speed data transmission over isolation barriers. SOP-8 / DIP-8 (Hermetic) Compact surface-mount or rugged through-hole footprint. Output Type Open Collector 1458 optocoupler datasheet
Note: Access to the phototransistor's base (Pin 6) allows engineers to fine-tune the transistor's switching characteristics, adjust sensitivity, or add a leakage resistor to ground to improve turn-off times. 3. Absolute Maximum Ratings
| If you need... | Buy this part number... | Key Datasheet spec | | :--- | :--- | :--- | | General purpose, cheap, DC switching | (DIP-4, smaller) | CTR 50-600%, VISO 5kV | | Robust, high isolation, classic | 4N35 (DIP-6) | CTR 100%, VISO 2.5kV | | High voltage (up to 70V) output | 4N36 | VCEO 70V | | AC input detection | H11AA1 | Contains two back-to-back LEDs | | Fast digital communication (1Mbps) | 6N137 | Logic output, 10ns propagation delay | | TRIAC driver for AC mains | MOC3021 | Zero-cross or random phase | Frequently used to safely step control signals up
The 1458 optocoupler datasheet provides a detailed list of specifications that define the device's performance and characteristics. Some of the key specifications include:
| Parameter | Symbol | Rating | Unit | |-----------|--------|--------|------| | Forward Current (LED) | I_F | 60 | mA | | Reverse Voltage (LED) | V_R | 6 | V | | Collector-Emitter Voltage | V_CEO | 30 | V | | Emitter-Collector Voltage | V_ECO | 7 | V | | Power Dissipation (Output) | P_out | 150 | mW | | Total Package Dissipation | P_tot | 250 | mW | | | V_ISO | 5000 | V_RMS | SOP-8 / DIP-8 (Hermetic) Compact surface-mount or rugged
(Pin 6) and (Pin 4) to your isolated power supply. Note: Always place a small decoupling capacitor (e.g., ) close to the VCCcap V sub cap C cap C end-sub pin to filter out high-frequency noise.