PS8551L4-AX

Product Overview

Category

The PS8551L4-AX belongs to the category of optocouplers, also known as optoisolators or photocouplers.

Use

Optocouplers are electronic components used to transfer electrical signals between two isolated circuits by utilizing light. The PS8551L4-AX is specifically designed for high-speed communication applications.

Characteristics

• High-speed response time
• Low power consumption
• Compact size
• Wide operating temperature range
• High isolation voltage

Package

The PS8551L4-AX is available in a small outline package (SOP) with four pins.

Essence

The essence of the PS8551L4-AX lies in its ability to provide galvanic isolation between input and output circuits, ensuring signal integrity and protection against voltage spikes.

Packaging/Quantity

The PS8551L4-AX is typically packaged in reels or tubes, with a quantity of 2,500 units per reel.

Specifications

• Isolation Voltage: 5,000 Vrms
• Data Rate: Up to 15 Mbps
• Supply Voltage: 3.0 V to 5.5 V
• Operating Temperature Range: -40°C to +105°C
• Input Current: 5 mA (max)
• Forward Voltage: 1.2 V (typ)

Detailed Pin Configuration

The PS8551L4-AX optocoupler has the following pin configuration:

1. VCC (Supply Voltage)
2. GND (Ground)
3. IN (Input)
4. OUT (Output)

Functional Features

• High-speed data transmission
• High noise immunity
• Low power consumption
• High common-mode rejection ratio
• High isolation voltage
• RoHS compliant

Advantages and Disadvantages

Advantages

• Provides galvanic isolation, protecting sensitive components from voltage spikes
• Enables high-speed communication between isolated circuits
• Compact size allows for space-saving designs
• Wide operating temperature range ensures reliability in various environments

Disadvantages

• Limited data rate compared to some other optocouplers
• Higher cost compared to non-isolated alternatives

Working Principles

The PS8551L4-AX utilizes an LED (Light Emitting Diode) as the input and a phototransistor as the output. When an electrical signal is applied to the input side, the LED emits light, which is then detected by the phototransistor on the output side. This optical coupling allows for electrical isolation while transmitting the signal.

Detailed Application Field Plans

The PS8551L4-AX finds applications in various fields, including:

1. Industrial automation: Isolation of control signals in PLCs (Programmable Logic Controllers) and motor drives.
2. Telecommunications: Signal isolation in high-speed data transmission systems.
3. Medical equipment: Protection of sensitive electronic components from potential voltage differences.
4. Automotive electronics: Isolation of signals in automotive control systems.

Detailed and Complete Alternative Models

1. PS8551L1-AX: Similar specifications but with a lower data rate of 1 Mbps.
2. PS8551L2-AX: Higher data rate of 25 Mbps but with a slightly larger package size.
3. PS8551L3-AX: Enhanced noise immunity and higher isolation voltage of 7,500 Vrms.

These alternative models provide options based on specific requirements and performance needs.

In conclusion, the PS8551L4-AX optocoupler offers high-speed communication, galvanic isolation, and compact size, making it suitable for a wide range of applications. Its advantages include reliable signal transmission and protection against voltage spikes, while its limitations include a limited data rate and higher cost compared to non-isolated alternatives.