(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
high-speed, single-channel optocoupler (also known as the HCPL-A1458 ) manufactured by Avago/Agilent a1458 optocoupler datasheet
. It is designed for applications requiring electrical isolation and high-speed signal transmission, such as industrial control and telecommunications. Key Technical Specifications The following parameters are typical for the Broadcom HCPL-1458 Speed & Performance : Up to 50 MBd (megabaud). Propagation Delay
: Typically 20 ns, with a maximum of 35 ns at specific frequencies. Common Mode Rejection (CMR) : Minimum 15,000 V/μs. Electrical Characteristics Supply Voltage ( cap V sub cap C cap C end-sub
: 3.0 V to 5.5 V, making it compatible with both 3.3V and 5V logic. Output Type : Open collector, supporting voltages up to 20 V. Isolation Voltage ( cap V sub cap I cap S cap O end-sub
: 3750 Vrms to 5000 Vrms (depending on the specific package and testing standard). Environmental Operating Temperature : Ranges from -40°C to +85°C. Pinout and Package The A1458 is typically housed in an 8-pin SOP (Small Outline Package) DIP-8 package Input Side
: Contains a GaAsP LED that emits infrared light when current is applied. Output Side
: Features an integrated high-gain photo detector and a logic gate for high-speed switching. Common Applications Industrial Automation
: Used for logic ground isolation and signal transmission in harsh electrical environments. Power Supplies
: Acts as a feedback element in switched-mode power supplies (SMPS) to maintain isolation. Motor Drives
: Provides isolation for power transistor gates (MOSFET/IGBT) to protect control circuitry from high-voltage spikes. Computing & Data
: Replaces pulse transformers and slow phototransistor isolators in TTL/CMOS logic interfaces. For full engineering details, you can download the HCPL-1458 Datasheet Broadcom product page Do not confuse this with the
, which is a dual operational amplifier (op-amp) and entirely different in function. STMicroelectronics schematic example of how to connect the A1458 to a microcontroller like an HCPL-A1458 | In Stock | Utsource
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 . (often listed as HCPL-A1458 ) is a high-speed,
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 I don’t have live internet access to retrieve
H11L1 | Brief Description: Logic-gate optocoupler with Schmitt trigger output, ideal for interfacing with low logic circuits. HCPL-1458/ 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.
I cannot directly fetch or reproduce the full datasheet text for the “a1458 optocoupler” because:
However, I can help you in other ways:
Identify the part – I see no common industry optocoupler named “A1458.” Could it be a misreading of:
Check common optocoupler manufacturers – Try searching exact string:
"A1458" optocoupler datasheet
on DatasheetArchive, Alldatasheet, Octopart, Mouser, DigiKey, or manufacturer sites (ON Semi, Vishay, Broadcom).
If it’s a custom/obsolete part – Provide package type (DIP-4, DIP-6, SOIC-8), number of pins, isolation voltage, or application (motor drive, power supply, IGBT driver). I can then suggest a modern equivalent or typical pinout/specs.
If you can share where you saw “A1458” (PCB marking, schematic, BOM), I can help decode it.
Note: This is a developer-generated technical text based on standard optocoupler specifications (similar to 4N35, PC817, or MOC302x families). For a real A1458, please check the manufacturer’s official datasheet.
The A1458 optocoupler datasheet often includes reference circuits. Here are two common ones.