Broadcom Limited
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HCPL-7851#100
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HCPL-7851#100

Product Overview

Category: Optocoupler
Use: Isolation and signal transmission between high voltage and low voltage circuits
Characteristics: High isolation voltage, fast switching speed, compact package
Package: DIP-8 (Dual Inline Package)
Essence: Optoelectronic device that combines an infrared emitter and a phototransistor
Packaging/Quantity: 100 units per package

Specifications

  • Isolation Voltage: 5,000 Vrms
  • Collector-Emitter Voltage: 70 V
  • Current Transfer Ratio: 50% to 600%
  • Rise Time: 18 µs
  • Fall Time: 15 µs
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The HCPL-7851#100 optocoupler has the following pin configuration:

__ __ | 1| | 2| |__| |__| IN OUT

Pin 1 (IN): Input side, connected to the high voltage circuit
Pin 2 (OUT): Output side, connected to the low voltage circuit

Functional Features

  • Provides electrical isolation between input and output circuits
  • Transmits signals from high voltage to low voltage without direct electrical connection
  • Fast switching speed allows for efficient signal transmission

Advantages and Disadvantages

Advantages: - High isolation voltage ensures safety in high voltage applications - Compact package saves space on PCB - Fast switching speed enables quick response times

Disadvantages: - Limited operating temperature range (-40°C to +85°C) - Requires external current limiting resistor for proper operation

Working Principles

The HCPL-7851#100 optocoupler works based on the principle of optical coupling. When a voltage is applied to the input side (Pin 1), the infrared emitter emits light. This light is then detected by the phototransistor on the output side (Pin 2), which generates an electrical signal proportional to the received light intensity. The electrical signal can be used to control or monitor the low voltage circuit, while maintaining isolation from the high voltage circuit.

Application Field Plans

The HCPL-7851#100 optocoupler finds applications in various fields, including:

  1. Power supply systems
  2. Industrial automation
  3. Motor control circuits
  4. Medical equipment
  5. Isolated communication interfaces

Alternative Models

Other optocouplers that can be used as alternatives to HCPL-7851#100 include:

  1. PC817
  2. MOC3021
  3. TLP521-1
  4. SFH620A
  5. PS2501-1

These models offer similar functionality and can be selected based on specific requirements and availability.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací HCPL-7851#100 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of HCPL-7851#100 in technical solutions:

Q1: What is HCPL-7851#100? A1: HCPL-7851#100 is a high-speed optocoupler designed for use in applications requiring high data rates and low power consumption.

Q2: What are the key features of HCPL-7851#100? A2: The key features of HCPL-7851#100 include high-speed performance, low power consumption, wide operating temperature range, and compatibility with various digital logic families.

Q3: What are the typical applications of HCPL-7851#100? A3: HCPL-7851#100 is commonly used in applications such as digital communications, industrial automation, motor control, and power supply feedback loops.

Q4: What is the maximum data rate supported by HCPL-7851#100? A4: HCPL-7851#100 supports a maximum data rate of up to 15 Mbps.

Q5: What is the input voltage range for HCPL-7851#100? A5: The input voltage range for HCPL-7851#100 is typically between 3V and 5V.

Q6: Can HCPL-7851#100 be used in high-noise environments? A6: Yes, HCPL-7851#100 has a high common-mode rejection ratio (CMRR) which makes it suitable for use in high-noise environments.

Q7: Is HCPL-7851#100 compatible with TTL and CMOS logic families? A7: Yes, HCPL-7851#100 is compatible with both TTL and CMOS logic families.

Q8: Does HCPL-7851#100 require an external power supply? A8: No, HCPL-7851#100 is a self-powered device and does not require an external power supply.

Q9: What is the typical response time of HCPL-7851#100? A9: The typical response time of HCPL-7851#100 is around 100 ns.

Q10: Can HCPL-7851#100 be used in high-temperature environments? A10: Yes, HCPL-7851#100 has a wide operating temperature range of -40°C to +100°C, making it suitable for use in high-temperature environments.

Please note that these answers are general and may vary depending on the specific application and requirements.