A1458 Optocoupler Datasheet May 2026

The A1458 (HCPL-A1458) is a specialized high-speed optocoupler designed to provide galvanic isolation for IGBT and Power MOSFET gate driving in industrial motor drives and power supplies. Featuring an open-collector output, it offers 35 ns propagation delay and a robust operating range of -40°C to +100°C for high-noise environments. Technical specifications can be reviewed in the datasheet from Farnell. HCPL-A1458 | In Stock - utsource

(often referred to by its full part number HCPL-A1458 ) is a high-speed logic gate optocoupler manufactured by Broadcom (formerly Avago/Agilent). Designed for high-performance industrial and digital logic isolation, it is frequently used to protect low-voltage microprocessors from high-voltage transients in electrically "noisy" environments. 1. Key Technical Specifications

The A1458 is characterized by its speed and high noise immunity. Below are the primary technical parameters found in the HCPL-1458 datasheet Maximum Data Rate , making it suitable for high-speed digital communication. Propagation Delay : Approximately (typical), ensuring fast signal response times. Isolation Voltage : Rated at (standard) or up to depending on the specific variant/package. Common Mode Rejection (CMR) : Minimum of

, which allows the device to maintain signal integrity even in environments with severe electromagnetic interference. Supply Voltage ( cap V sub cap C cap C end-sub : Operates between 4.5 V and 5.5 V , compatible with standard TTL and CMOS logic levels. Output Type Open Collector

, which provides flexibility for level-shifting applications by using an external pull-up resistor. 2. Pinout and Connection Diagram The A1458 typically comes in an 8-pin SOP or DIP

package. While you should always verify with the official diagram from Broadcom's technical data

, the standard 8-pin high-speed logic configuration is as follows: Description No Connection Anode of the input LED Cathode of the input LED No Connection Ground for the output stage cap V sub cap O Output signal (Open Collector) cap V sub cap B Base connection (often N/C in specific variants) cap V sub cap C cap C end-sub Supply Voltage (4.5V – 5.5V)

Note: A 0.1 µF bypass capacitor must be connected between pins 5 and 8 to ensure stable operation. 3. Common Applications

Because of its high speed and robust isolation, the A1458 is a staple in several critical industries: Optocouplers and Opto-Isolators - Broadcom Inc.

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A1458 optocoupler (frequently cross-referenced as the HCPL-1458 or HCPL-A1458

) is a high-speed, logic-gate optocoupler designed for robust electrical isolation in demanding industrial and telecommunication environments. Performance Highlights High-Speed Signal Integrity

: Delivers impressive performance with typical propagation delays as low as and data rates reaching up to Exceptional Noise Immunity

: Features a high common-mode transient immunity (CMR) of at least 15,000 V/μs

, 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

, allowing it to interface seamlessly with various logic levels, including TTL and CMOS. Reliable Isolation : Provides a safety-critical insulation voltage of 3750 Vrms to 5000 Vrms

, essential for protecting sensitive microcontrollers from high-voltage power stages. Key Specifications Up to 50 MBd Propagation Delay 20 ns (typical) Isolation Voltage Supply Voltage ( cap V sub cap C cap C end-sub 3.0V to 5.5V Operating Temp Typical Applications

This component is a staple in systems requiring safe isolation between low-voltage control and high-voltage power: Motor Drives & Inverters

: Used for isolating control signals in solar inverters and industrial AC motor drives. Power Supplies

: Reliable feedback path isolation in switch-mode power supplies (SMPS). Data Communication a1458 optocoupler datasheet

: Protecting communication lines (RS-232, RS-485) and eliminating ground loops. Gate Driving : Specifically designed to drive power transistors like Power MOSFETs in high-power applications. Product Availability

The A1458 is available in various package formats to suit different PCB designs: SOP-8 (Surface Mount) : Available for approximately at retailers like DIP-8 (Through-Hole) : Available for approximately comparison

between the A1458 and other high-speed optocouplers like the 6N137? Line HP1458 HCNW1458 HCPL-1458 DIP-8 Optocouplers

The (commonly referred to as the HCPL-1458) is a high-speed, logic-gate optocoupler designed for isolation in high-performance digital and power systems . It is primarily manufactured by brands such as Broadcom/Avago (formerly Agilent) . Key Technical Specifications

The A1458 is characterized by its high common-mode rejection and speed, making it suitable for noisy industrial environments .

Speed & Data Rate: Typically supports data rates up to 10–15 MBd .

Propagation Delay: Approximately 35–45 ns (typical), with a maximum of 8 ns for some high-speed variants .

Isolation Voltage: Rated for 3750 Vrms to 5300 Vrms depending on the specific variant and package .

Common Mode Rejection (CMR): Minimum of 15,000 V/µs (often reaching 50 kV/μs in newer models like the HCPL-1458) . Supply Voltage ( VCCcap V sub cap C cap C end-sub

): Operates between 3.0 V and 5.5 V, making it compatible with both 3.3V and 5V logic .

Output Type: Open Collector, allowing for flexible output voltage levels (up to 20V) and easy interfacing with TTL/CMOS logic . Pin Configuration (8-Pin DIP/SO-8)

While exact pinouts can vary by package style (e.g., 16-pin DIP versions also exist), the standard 8-pin configuration typically follows :

Input Side: Pins for Anode and Cathode of the internal GaAsP LED. Output Side: Pins for VCCcap V sub cap C cap C end-sub , Output ( VOcap V sub cap O ), and Ground ( GNDcap G cap N cap D Common Applications

Motor Control: High-speed gate driving for IGBTs and Power MOSFETs in industrial inverters .

Digital Isolation: Ground loop elimination and signal isolation for TTL/CMOS high-speed logic .

Switching Power Supplies: Feedback isolation in SMPS and DC-DC converters .

Telecommunications: Used for high-speed digital interface isolation and line receivers . Substitute & Cross-Reference Parts

If the A1458 is unavailable, the following components are common functional alternatives: 6N137: A widely available 10MBd high-speed optocoupler .

HCPL-4506 / HCPL-0700: Often used as direct logic-output substitutes .

H11L1: A logic-gate optocoupler featuring a Schmitt trigger output for enhanced noise immunity .

For detailed performance curves and thermal derating, you can download the full technical data from Farnell or Alldatasheet . Single Channel, High Speed Optocouplers Technical Data

Power Transistor Isolation. Feedback Element in. Switched Mode Power. Supplies. Replaces Pulse Transformers. • Replaces Slow. HCPL-A1458 | In Stock | Utsource

H11L1 | Brief Description: Logic-gate optocoupler with Schmitt trigger output, ideal for interfacing with low logic circuits. HCPL-1458/ A1458 | In Stock - utsource

Conclusion

The A1458 optocoupler datasheet reveals a versatile, robust, and widely available component for signal isolation. Its high isolation voltage (5,000 Vrms), wide operating temperature range, and flexible CTR options make it suitable for everything from consumer power supplies to industrial automation. I don’t have live internet access to retrieve

When designing with the A1458, pay close attention to:

Always download the latest official datasheet from a verified distributor (Mouser, DigiKey, or the manufacturer’s site) before finalizing your design. The information provided here is a comprehensive guide, but nothing replaces the manufacturer’s certified data.

Have you used the A1458 in a project? Share your experience or ask a question in the comments below. For more component deep dives, subscribe to our newsletter.

The A1458 is an optically coupled isolator consisting of a GaAsP LED and an integrated high-gain photodetector. It is designed for high-speed logic gate isolation and is commonly used in industrial and telecommunication environments to provide galvanic isolation while maintaining signal integrity. Key Technical Specifications Specification Speed (Propagation Delay) 8 ns max (tPHL/tPLH) Isolation Voltage Supply Voltage (VCC) 3.0V to 5.5V Common Mode Rejection (CMR) 50 kV/µs minimum Current Consumption (ICC) 1.2 mA max (Low power) Operating Temperature -40°C to +105°C (Extended range) Package Types 8-Pin DIP, SOIC-8 / SOP-8 Core Features

High-Speed Operation: Optimized for digital signal transmission with minimal delay (35 ns at 10 kHz in some configurations).

High Noise Immunity: Extremely high common mode transient immunity (CMTI) ensures reliable performance in "noisy" industrial environments.

Logic Gate Output: Features a logic gate output, making it directly compatible with TTL and CMOS systems.

Hermetically Sealed Options: Available in hermetic versions (HCNW1458) for high-reliability military or aerospace applications. Primary Applications HCPL-A1458 | In Stock | Utsource

The A1458 (also identified as the HCPL-1458 or HCPL-A1458) is a high-speed, high-gain optocoupler manufactured primarily by Avago Technologies (now Broadcom Limited). It is designed to provide high-speed signal isolation and is often used as a gate driver for power transistors like IGBTs and MOSFETs in industrial environments. Key Technical Specifications

The following characteristics are typical for the HCPL-A1458 series: Supply Voltage ( VCCcap V sub cap C cap C end-sub

): Typically 3.0V to 5.5V or 4.5V to 5.5V, offering flexibility for different logic levels.

Propagation Delay: Very low, often rated at approximately 35 ns to 45 ns, making it suitable for high-speed digital data rates up to 15 Mbps. Isolation Voltage ( Visocap V sub i s o end-sub

): High safety rating of 3750 Vrms to 5300 Vrms, ensuring protection between low-voltage control and high-voltage power stages.

Common Mode Transient Immunity (CMR): High noise immunity, typically 15 kV/µs to 50 kV/µs, essential for preventing false triggers in noisy industrial settings.

Input/Output: Features a GaAsP LED input and an integrated high-gain photodetector with an open collector output. Common Applications

Motor Drives: Used in industrial motor drive inverters for speed and torque control.

Renewable Energy: Integrated into solar and wind turbine inverters.

Power Supplies: Common in Switch-Mode Power Supplies (SMPS) to isolate control signals from high-voltage rails.

Microcontroller Interfacing: Protects sensitive MCUs from voltage spikes and noise while communicating with external hardware. Packaging Information

The device is widely available in surface-mount SOP-8 or SOIC-8 packages, as well as 8-pin DIP formats for through-hole mounting. Some high-reliability versions are hermetically sealed for use in aerospace or harsh industrial environments. HCPL-1458/ A1458 - Broadcom - Price, Inventory & Datasheets

The A1458 (frequently referred to as the Go to product viewer dialog for this item.

) is a high-speed, logic-gate optocoupler designed by Broadcom (formerly Avago Technologies). It is specifically engineered for applications requiring robust galvanic isolation and high-speed signal transmission, such as industrial control systems and data communications. Core Specifications

The A1458 is characterized by its high-speed performance and low power requirements. Key electrical and performance specifications include: Specification Isolation Voltage 3750 Vrms to 5000 Vrms (depending on version) Data Rate Up to 15 MBd (typical) or 50 MBd (max depending on series) Propagation Delay ~20 ns to 45 ns Supply Voltage ( VCCcap V sub cap C cap C end-sub ) 4.5 V to 5.5 V Common Mode Rejection 15,000 V/μs (minimum) Output Type Open Collector Operating Temperature -40°C to +85°C or +100°C Pinout Configuration

The A1458 typically comes in an 8-pin DIP or SO-8 (SOP-8) surface-mount package. The standard 8-pin logic-gate optocoupler pinout is as follows: Pin 1: No Connection (NC) Pin 2: Anode (Input LED) Pin 3: Cathode (Input LED) Pin 4: No Connection (NC) Pin 5: Ground ( GNDcap G cap N cap D Pin 6: VOUTcap V sub cap O cap U cap T end-sub (Output Signal) Pin 7: VEcap V sub cap E (Enable Pin, sometimes used for logic control) Pin 8: VCCcap V sub cap C cap C end-sub (Supply Voltage) Key Features & Advantages However, I can help you in other ways:

High Noise Immunity: With a minimum common-mode transient immunity of 15 kV/µs, it is highly resistant to electrical noise and voltage spikes.

Low Input Current: It operates efficiently with low input drive currents, typically around 13 mA, making it compatible with most standard logic families.

TTL Compatibility: The output logic levels are compatible with standard TTL and CMOS circuits, simplifying the interface with microcontrollers. Typical Applications

Because of its high speed and isolation rating, the A1458 is commonly found in:

Digital Isolation: Protecting sensitive microcontrollers from high-voltage transients in industrial control systems.

Power Supplies: Used in feedback loops for Switching Power Supplies (SMPS) to maintain isolation between primary and secondary stages.

Motor Drives: Isolating the control logic from high-power motor switching noise.

Communication Interfaces: Ideal for high-speed data links like RS-232, RS-485, or CAN bus isolation. Replacement and Equivalents

(often listed as HCPL-A1458 ) is a high-speed, single-channel optocoupler designed for robust signal isolation in demanding industrial and power applications. Manufactured by brands like Avago (Broadcom)

, it is frequently used to bridge low-voltage control signals and high-voltage power stages, such as driving IGBTs or Power MOSFETs in motor control systems. Ovaga Technologies Key Specifications According to technical data from , the primary electrical characteristics include: : Supports high-speed communication up to Isolation Voltage : High safety rating of (standard) to (enhanced). Supply Voltage ( cap V sub cap C cap C end-sub : Wide operating range of 3.0 V to 5.5 V , making it compatible with both 3.3V and 5V logic. Propagation Delay : Highly responsive with typical delays around 35 ns to 45 ns Common Mode Transient Immunity (CMR) : Exceptional noise rejection, typically 15,000 V/µs 50,000 V/µs

, ensuring signal integrity in electrically noisy environments. Output Type Open Collector , allowing for flexible logic level shifting. Core Features & Design Hermetic Sealing

: Many variants (like the Broadcom version) are hermetically sealed in SOP-8 packages to protect internal components from moisture and environmental contaminants, crucial for military or aerospace use. Low Power Requirement : Designed for low input forward current ( cap I sub cap F )—typically

—which reduces the drive power needed from the control circuit. TTL Compatibility

: The output is fully compatible with standard TTL and CMOS logic gates. Applications

Commonly integrated into high-reliability systems including: Inverter Circuits : Solar and wind turbine inverters. Motor Drives

: Controlling speed and torque in AC motors while protecting the controller. Switching Power Supplies : Serving as a feedback element to maintain isolation. Data Communication

: Isolated line receivers and high-speed logic ground isolation. Equivalent & Substitute Parts If the A1458 is unavailable,

and other distributors suggest the following substitutes based on similar performance profiles:

ONSEMI, DC Input Logic Gate Output Optocoupler, Surface Mount, 8-Pin Dip (5 Ct), 6N137SM A widely available high-speed single-channel optocoupler.

Broadcom HCPL-4503-300E Optocoupler, Transistor, 3.75Kv, Smdip-8 | Transistor Output Optocouplers Offers high common-mode rejection ( VISHAY DC Input Transistor Output Optocoupler

Very high-speed with a TTL compatible open-collector output.

ONSEMI, DC Input Logic Gate Output Optocoupler, Through Hole, 8-Pin Dip (5 Ct), FOD260L Optimized for high data rate systems. or a specific circuit schematic for integrating this into a motor driver project? HCPL-1458 AVAGO/AGILENT Optocoupler / Led / Infrared

The HCPL-1458 from AVAGO/AGILENT manufacturer is a IC Chips with Hermetically Sealed, Low IF, Wide VCC, High Gain Optocouplers. Veswin Electronics HCPL-1458 | Original stock,Price - Ovaga Technologies

A1458 Datasheet: Key Specifications Breakdown

To use the component effectively, you must decipher the datasheet. Here are the critical parameters you need to look for in the A1458 datasheet.

Component Deep Dive: Decoding the A1458 Optocoupler Datasheet

When a new optocoupler part number like A1458 crosses your desk, the datasheet is the only source of truth. Unlike standard jellybean parts (e.g., 4N25), an "A1458" suggests either a proprietary manufacturer code, a high-reliability (Hi-Rel) military/aerospace component, or a specific binning of a common device.

Here is what you need to look for when reading the A1458 Optocoupler Datasheet.