1458 Optocoupler Datasheet

When designing a PCB, ensure that you do not run any ground traces or power lines underneath the optocoupler package between the input side (Pins 1–3) and the output side (Pins 4–6). Keep a minimum gap of 5 mm to 8 mm to preserve the 5300 VRMScap V sub cap R cap M cap S end-sub isolation rating.

Traditional general-purpose optocouplers encounter a bottleneck: the large base-collector capacitance of standard phototransistors slows down signal transitions, resulting in prolonged propagation delays.

The output side contains a phototransistor that switches on when it detects IR light.

Understanding the pin configuration is crucial for PCB layout and prototyping. Below is the typical 8-pin Dual In-line Package (DIP) layout for a standard 1458 dual-channel optocoupler: 1458 optocoupler datasheet

in one package. Some modern digital-to-analog converters, like the Go to product viewer dialog for this item.

is frequently used in environments where noise sensitivity is high and reliable isolation is critical:

A common use case for the 1458 optocoupler is isolating a 3.3V or 5V MCU from a noisy industrial subsystem (like a 12V or 24V relay control matrix). When designing a PCB, ensure that you do

This family of optocouplers boasts several features that make them a preferred choice for designers:

Optocouplers (also known as opto-isolators) are fundamental to modern power electronics and industrial automation. The 1458 device is housed in a standard , though surface-mount (SMD) variants are available for high-density circuit boards. Internal Functional Blocks

Over years of continuous operation, the light output of the IR LED decreases. It is standard practice to assume a 20% to 50% reduction in CTR over the system's operational lifespan. The output side contains a phototransistor that switches

+5V (MCU Side) +24V (Load Side) | | [R1] (330 Ohm) [R_Load] | | (Pin 1) Anode (Pin 5) Collector +--------+ +--------+ | \ / | | /| | | \/ | >>> Optical Barrier >>> | / | | | ---- | | \| | +--------+ +--------+ (Pin 2) Cathode (Pin 4) Emitter | | [MCU GPIO Pin] GND (24V Side)

: High-speed digital signal switching and line receivers.

The is a specialized, hermetically sealed, high-speed optocoupler designed to provide robust electrical isolation between low-voltage control circuits and high-voltage power components. Originally engineered by Avago Technologies (now Broadcom) and historically associated with Agilent, this component combines a gallium arsenide phosphide (GaAsP) Light Emitting Diode (LED) with an integrated, high-gain photodetector in an industry-standard package.