ISL81485IB

Product Overview

Category: Integrated Circuit (IC)

Use: ISL81485IB is a high-speed, quad-channel digital isolator designed for industrial applications. It provides galvanic isolation between different circuits, ensuring signal integrity and protection against voltage spikes and noise.

Characteristics: - High-speed data transmission - Robust isolation barrier - Low power consumption - Wide operating temperature range - Compact package size

Package: The ISL81485IB is available in a small outline integrated circuit (SOIC) package, which allows for easy integration into various electronic systems.

Essence: The essence of the ISL81485IB lies in its ability to provide reliable and secure communication between different parts of an industrial system while maintaining electrical isolation.

Packaging/Quantity: The ISL81485IB is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Supply Voltage: 3.0V to 5.5V
• Data Rate: Up to 100 Mbps
• Isolation Voltage: 2.5kV RMS
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOIC-16

Detailed Pin Configuration

The ISL81485IB has a total of 16 pins, which are assigned specific functions as follows:

1. VDD1: Power supply for Channel 1
2. GND1: Ground for Channel 1
3. RXD1: Receive data input for Channel 1
4. TXD1: Transmit data output for Channel 1
5. VDD2: Power supply for Channel 2
6. GND2: Ground for Channel 2
7. RXD2: Receive data input for Channel 2
8. TXD2: Transmit data output for Channel 2
9. VDD3: Power supply for Channel 3
10. GND3: Ground for Channel 3
11. RXD3: Receive data input for Channel 3
12. TXD3: Transmit data output for Channel 3
13. VDD4: Power supply for Channel 4
14. GND4: Ground for Channel 4
15. RXD4: Receive data input for Channel 4
16. TXD4: Transmit data output for Channel 4

Functional Features

• High-speed data transmission: The ISL81485IB supports data rates of up to 100 Mbps, enabling fast and efficient communication between isolated circuits.
• Robust isolation barrier: With an isolation voltage of 2.5kV RMS, the IC provides a reliable barrier against electrical noise and voltage spikes, ensuring signal integrity.
• Low power consumption: The IC is designed to operate with low power consumption, making it suitable for battery-powered applications or systems with strict power requirements.
• Wide operating temperature range: The ISL81485IB can withstand a wide temperature range from -40°C to +125°C, allowing it to be used in harsh industrial environments.
• Compact package size: The small outline integrated circuit (SOIC) package offers a compact form factor, facilitating easy integration into space-constrained designs.

Advantages and Disadvantages

Advantages: - High-speed data transmission capability - Reliable galvanic isolation for enhanced signal integrity - Low power consumption for energy-efficient operation - Wide operating temperature range for versatile application scenarios - Compact package size for easy integration

Disadvantages: - Limited number of channels (quad-channel) - Relatively higher cost compared to non-isolated alternatives

Working Principles

The ISL81485IB utilizes a combination of optocoupler and CMOS technologies to achieve galvanic isolation. Each channel consists of an input photodiode, a high-speed LED, and an output photodiode. The input signal is converted into light by the input photodiode, which then activates the LED. The light emitted by the LED is received by the output photodiode, which converts it back into an electrical signal. This optical isolation ensures that there is no direct electrical connection between the input and output sides, providing protection against voltage spikes and noise.

Detailed Application Field Plans

The ISL81485IB is widely used in various industrial applications, including:

1. Motor control systems
2. Power inverters
3. Industrial automation
4. Programmable logic controllers (PLCs)
5. Communication interfaces
6. Sensor networks
7. Isolated data acquisition systems

Its ability to provide reliable communication and electrical isolation makes it suitable for any application where signal integrity and protection are critical.

Detailed and Complete Alternative Models

• ISL81486IB: Similar to ISL81485IB but with additional