HCPL-788J

Product Overview

Category: Optocoupler
Use: Isolation of high-speed logic systems
Characteristics: High speed, low power consumption, small package size
Package: 8-pin DIP (Dual Inline Package)
Essence: Optoelectronic device for signal isolation
Packaging/Quantity: Available in reels of 1000 units

Specifications

• Isolation Voltage: 3750 Vrms
• Data Rate: 15 Mbps
• Propagation Delay: 50 ns
• Supply Current: 5 mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. Anode (Input)
2. Cathode (Input)
3. NC (No Connection)
4. Ground (Output)
5. Emitter (Output)
6. Collector (Output)
7. NC (No Connection)
8. Vcc (Output)

Functional Features

• High-speed data transmission
• Low power consumption
• Compact size for space-constrained applications
• High isolation voltage for enhanced safety
• Wide operating temperature range for versatility

Advantages and Disadvantages

Advantages: - High-speed data transfer enables efficient communication between high-speed logic systems. - Low power consumption helps reduce energy usage and heat generation. - Small package size allows for easy integration into compact electronic devices. - High isolation voltage ensures reliable signal isolation and protection.

Disadvantages: - Limited number of pins may restrict the functionality in complex circuit designs. - Higher cost compared to traditional optocouplers due to advanced features.

Working Principles

HCPL-788J is an optocoupler that utilizes an LED (Light Emitting Diode) as the input and a phototransistor as the output. When an electrical signal is applied to the input LED, it emits light that is detected by the phototransistor. This optical coupling provides electrical isolation between the input and output circuits, preventing any potential ground loops or voltage spikes from affecting the connected systems.

Detailed Application Field Plans

1. Industrial Automation: HCPL-788J can be used in industrial control systems to provide signal isolation between high-speed logic circuits, ensuring reliable communication and protection against electrical noise.
2. Medical Devices: The optocoupler's high isolation voltage and compact size make it suitable for medical equipment, such as patient monitoring devices, where safety and space constraints are critical.
3. Automotive Electronics: HCPL-788J can be employed in automotive applications, such as electronic control units (ECUs), to isolate signals between different subsystems and protect sensitive components from voltage fluctuations.

Detailed and Complete Alternative Models

1. HCPL-7800: Similar specifications with a higher data rate of 30 Mbps.
2. HCPL-7840: Offers lower propagation delay of 25 ns but has a slightly higher supply current of 7 mA.
3. HCPL-7900: Provides a wider operating temperature range of -55°C to +125°C but has a lower isolation voltage of 2500 Vrms.

(Note: The above alternative models are just examples and not an exhaustive list.)

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