ACPL-785E

Product Overview

Category

ACPL-785E belongs to the category of optocouplers or optoisolators.

Use

Optocouplers are electronic components used to transfer electrical signals between two isolated circuits. They provide electrical isolation and protect sensitive components from voltage spikes, noise, and other disturbances.

Characteristics

• ACPL-785E is a high-speed optocoupler designed for applications requiring high data rates.
• It offers excellent common-mode transient immunity and low pulse width distortion.
• The device operates over a wide temperature range and provides reliable performance in various environments.

Package

ACPL-785E comes in a compact dual-inline package (DIP) with eight pins.

Essence

The essence of ACPL-785E lies in its ability to transmit electrical signals across an isolation barrier, ensuring safe and reliable communication between different circuits.

Packaging/Quantity

ACPL-785E is typically packaged in reels or tubes, containing a specified quantity of optocouplers per package.

Specifications

• Isolation Voltage: 5000 Vrms
• Data Rate: Up to 15 Mbps
• Supply Voltage: 3.3 V to 5 V
• Operating Temperature Range: -40°C to +105°C
• Rise and Fall Time: 7 ns (typical)
• Propagation Delay: 35 ns (typical)

Detailed Pin Configuration

ACPL-785E has a total of eight pins arranged as follows:

1. VCC: Power supply pin for the input side.
2. GND: Ground reference for the input side.
3. NC: No connection.
4. VO1: Output pin 1.
5. VO2: Output pin 2.
6. GND: Ground reference for the output side.
7. VCC: Power supply pin for the output side.
8. NC: No connection.

Functional Features

• High-speed data transmission with low pulse width distortion.
• Excellent common-mode transient immunity.
• Low power consumption.
• Compact and reliable design.
• Wide operating temperature range.

Advantages and Disadvantages

Advantages

• Provides electrical isolation between circuits, protecting sensitive components.
• High data rate capability enables fast communication.
• Reliable performance in various environmental conditions.
• Compact package size allows for space-efficient designs.

Disadvantages

• Limited number of output channels (two in the case of ACPL-785E).
• Requires external power supply for both input and output sides.

Working Principles

ACPL-785E utilizes an LED on the input side to emit light when a signal is applied. This light is then detected by a photodetector on the output side, which generates an electrical signal proportional to the received light intensity. The electrical signals are isolated from each other due to the physical separation of the input and output sides, ensuring safe and accurate signal transfer.

Detailed Application Field Plans

ACPL-785E finds applications in various fields, including:

1. Industrial automation: Isolation of control signals in motor drives, power inverters, and PLCs.
2. Telecommunications: Signal isolation in high-speed data communication systems.
3. Medical equipment: Protection of sensitive components in patient monitoring devices and medical imaging systems.
4. Automotive electronics: Isolation of signals in electric vehicle charging stations and battery management systems.
5. Power electronics: Isolation of feedback signals in switch-mode power supplies and inverters.

Detailed and Complete Alternative Models

Some alternative models to ACPL-785E that offer similar functionality include:

1. HCPL-7850: High-speed optocoupler with 10 Mbps data rate.
2. PC817: General-purpose optocoupler with lower data rate but wider availability.
3. TLP785: Optocoupler with similar specifications and package size.

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

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