1458 Optocoupler Datasheet Now

Ideal for low-voltage, energy-efficient designs.

Note: The 1458 features faster response times than standard phototransistor optocouplers, making it suitable for low-to-medium speed data transmission (up to 1-2 MBd). Common-Mode Rejection (CMR) 10,000

The HCPL-1458 relies on an insulating layer placed securely between a high-efficiency AlGaAs infrared emitting LED and an integrated high-speed photodetector. By isolating circuits optically rather than electrically, it effectively eliminates ground loops, blocks electrical surges, and diminishes electromagnetic interference (EMI). Key highlights specified in the datasheet include:

Designed for high-speed switching, providing efficient signal transfer in digital applications. 1458 optocoupler datasheet

Unlike basic four-pin optocouplers like the PC817, which output to a raw phototransistor, the HCPL-1458 features a with a TTL-compatible open-collector output. Core Architectural Features:

The datasheet will usually include information on the package type, pin configuration, and dimensions.

Before diving into the datasheet, let's quickly cover what an optocoupler (also known as an opto-isolator) is. An optocoupler is a component that allows two isolated circuits to communicate with each other through light. It consists of an LED (light-emitting diode) and a photodetector (such as a phototransistor or photodiode) separated by a dielectric material. Ideal for low-voltage, energy-efficient designs

The —often listed in datasheets as the NTE1458 or referenced alongside similar industrial optoisolators—is a specialized electronic component designed to provide electrical isolation between two separate circuits. By transferring electrical signals using light waves, it prevents high voltages from damaging sensitive receiving components.

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:

The 1458 optocoupler integrates an Infrared Light Emitting Diode (IR LED) optically coupled to a silicon NPN phototransistor within a single compact package. By isolating circuits optically rather than electrically, it

Emitter terminal of the Channel 2 phototransistor.

) Range: Supports an operational layout from , making it fully compatible with standard 3.3V and 5V digital logic devices.