ACPL-K73L-000E: High-Performance Optoisolator by Broadcom Limited

The ACPL-K73L-000E from Broadcom Limited is a premium logic output optoisolator engineered for demanding industrial, medical, and telecommunications applications. Combining ultra-high isolation (5000Vrms), 15MBd data rates, and dual-channel reliability, this component ensures robust signal integrity in noisy environments. Below, we explore its technical specifications, advantages over competitors, and real-world use cases to help engineers make informed design decisions.

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In-Depth Technical Specifications

1. Unmatched Electrical Isolation

• 5000Vrms isolation voltage (1 minute, per UL 1577) for superior protection against high-voltage transients.
• 10kV/ s common-mode transient immunity (CMTI) minimizes noise-induced errors in motor drives and power systems.

2. Dual-Channel Architecture

• 2/0 input/output configuration enables bidirectional signal isolation with 55ns propagation delay (max) per channel.
• Independent channels prevent crosstalk, critical for PLC communication and medical device safety.

3. High-Speed Performance

• 15MBd NRZ data rate supports fast digital communication, with 3.5ns rise/fall times for precision timing.
• Push-pull output stage eliminates need for external pull-up resistors, reducing BOM costs.

4. Wide Operating Conditions

• Supply voltage flexibility: 3V 3.6V (low-power mode) or 4.5V 5.5V (standard operation).
• Industrial temperature range: -40 C to +105 C, compliant with IEC 60747-5-5 safety standards.

5. Compact & Reliable Packaging

• 8-pin SOIC package (6.81mm width) with creepage/clearance 8mm for high-voltage designs.
• Surface-mount (SMT) compatibility for automated PCB assembly.

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Comparative Advantages Over Competing Optoisolators

The ACPL-K73L-000E outperforms alternatives like Texas Instruments ISO7720 or Vishay VO615A with:

• 30% faster data rates (15MBd vs. 10MBd typical).
• Higher CMTI (10kV/ s vs. 25kV/ s).
• Lower power consumption (1.5V forward voltage vs. 1.8V industry average).

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Key Applications & Industry Solutions

1. Industrial Automation

• Isolates PWM signals in servo drives and RS-485 interfaces in PLCs.
• Certified for IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity.

2. Medical Equipment

• Ensures patient safety in ECG monitors and defibrillators (compliant with IEC 60601-1).

3. Renewable Energy Systems

• Protects inverter gate drivers in solar/wind power converters from DC bus transients.

4. Telecom Infrastructure

• Isolates high-speed data lines in 5G base stations and fiber-optic networks.

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Design Tips & Integration Guidelines

• PCB Layout: Maintain 8mm clearance between input/output traces to preserve isolation.
• Power Sequencing: Ensure VCC2 (output side) is powered before VCC1 (input) to avoid latch-up.
• Thermal Management: Derate operating current by 0.5mA/ C above +85 C ambient.

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Why Engineers Trust the ACPL-K73L-000E

With 25+ years of optocoupler expertise, Broadcom delivers proven reliability. The ACPL-K73L-000E includes:

• Automotive-grade quality (AEC-Q100 pending).
• RoHS 3.0 & REACH compliant for global market access.
• 10,000+ hours MTBF at maximum ratings.

Free samples and SPICE models available for prototyping. Contact our technical team for custom qualification reports!