HCPL-788J-500E

Product Overview

Category

HCPL-788J-500E belongs to the category of optocouplers or optoisolators.

Use

Optocouplers are electronic devices that enable electrical isolation between input and output circuits. They are commonly used to transfer signals between two circuits while providing galvanic isolation, protecting sensitive components from voltage spikes and noise.

Characteristics

• Optocouplers consist of an LED (light-emitting diode) as the input side and a phototransistor or photodiode as the output side.
• They provide high-speed signal transmission and electrical isolation.
• Optocouplers can operate in a wide range of temperatures and voltages.
• They offer low power consumption and high reliability.

Package

HCPL-788J-500E is available in a compact dual-inline package (DIP).

Essence

The essence of HCPL-788J-500E lies in its ability to transmit electrical signals across isolated circuits, ensuring safety and preventing interference.

Packaging/Quantity

HCPL-788J-500E is typically packaged in reels or tubes, with a quantity of 500 units per package.

Specifications

• Isolation Voltage: 5000 Vrms
• Forward Current: 20 mA
• Collector-Emitter Voltage: 70 V
• Operating Temperature Range: -40°C to +100°C
• Rise and Fall Time: 10 μs

Detailed Pin Configuration

HCPL-788J-500E has a total of 8 pins:

1. Anode (LED)
2. Cathode (LED)
3. Emitter (Phototransistor)
4. Collector (Phototransistor)
5. Base (Phototransistor)
6. No Connection
7. Ground
8. Vcc (Power Supply)

Functional Features

• HCPL-788J-500E provides high-speed signal transmission with a rise and fall time of 10 μs.
• It offers electrical isolation up to 5000 Vrms, ensuring safety in applications where isolation is critical.
• The optocoupler has a compact design, making it suitable for space-constrained applications.
• It operates reliably over a wide temperature range (-40°C to +100°C).
• HCPL-788J-500E has low power consumption, making it energy-efficient.

Advantages and Disadvantages

Advantages

• Provides galvanic isolation between input and output circuits, protecting sensitive components.
• High-speed signal transmission enables efficient communication between isolated circuits.
• Wide operating temperature range allows for versatile application in various environments.
• Compact design makes it suitable for space-constrained applications.
• Low power consumption contributes to energy efficiency.

Disadvantages

• Limited maximum collector-emitter voltage (70 V) may restrict certain high-voltage applications.
• Rise and fall time of 10 μs may not be sufficient for ultra-high-speed applications.

Working Principles

HCPL-788J-500E works based on the principle of optoelectronics. When an electrical signal is applied to the LED (input side), it emits light. This light is then detected by the phototransistor (output side), which converts it back into an electrical signal. The input and output sides are electrically isolated, preventing any direct electrical connection between them.

Detailed Application Field Plans

HCPL-788J-500E finds applications in various fields, including:

1. Industrial Automation: Used for signal isolation and noise reduction in control systems.
2. Power Electronics: Employed in motor drives, inverters, and power supplies to ensure safe signal transfer.
3. Medical Equipment: Utilized for patient monitoring and isolation of sensitive medical circuits.
4. Telecommunications: Used in communication systems to provide galvanic isolation and signal integrity.
5. Automotive Electronics: Employed for isolation and protection of automotive control circuits.

Detailed and Complete Alternative Models

1. HCPL-7800A: Offers similar functionality with a higher collector-emitter voltage rating (250 V).
2. PC817: Provides basic optocoupler functionality at a lower cost.
3. TLP521-4: Features four optocouplers in a single package, suitable for applications requiring multiple isolated channels.

These alternative models can be considered based on specific application requirements and desired specifications.

In conclusion, HCPL-788J-500E is an optocoupler that provides electrical isolation and high-speed signal transmission. Its compact design, wide operating temperature range, and low power consumption make it suitable for various applications. However, its limited collector-emitter voltage and rise/fall time may restrict certain high-voltage or ultra-high-speed applications.