ISL32455EIBZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: The ISL32455EIBZ-T is a high-speed, 3.3V powered RS-485/RS-422 transceiver designed for half-duplex communication in industrial applications.

Characteristics: - Supports data rates up to 20Mbps - Operates from a single 3.3V power supply - Features ±15kV ESD protection on the bus pins - Provides low quiescent current consumption - Offers hot plug capability - Supports up to 256 transceivers on the bus

Package: The ISL32455EIBZ-T comes in a small outline integrated circuit (SOIC) package.

Essence: This IC serves as a reliable and efficient solution for long-distance data transmission in industrial environments.

Packaging/Quantity: The ISL32455EIBZ-T is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage: 3.3V
• Data Rate: Up to 20Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Pins: 16
• ESD Protection: ±15kV
• Quiescent Current: 300µA (typical)
• Package Type: SOIC

Pin Configuration

The ISL32455EIBZ-T has the following pin configuration:

Pin 1: DE (Driver Output Enable) Pin 2: /RE (Receiver Output Enable) Pin 3: A (Non-Inverting Driver Input/Receiver Output) Pin 4: B (Inverting Driver Input/Receiver Output) Pin 5: GND (Ground) Pin 6: Y (Receiver Output) Pin 7: Z (Receiver Output) Pin 8: Vcc (Power Supply) Pin 9: /RE (Receiver Output Enable) Pin 10: DE (Driver Output Enable) Pin 11: B (Inverting Driver Input/Receiver Output) Pin 12: A (Non-Inverting Driver Input/Receiver Output) Pin 13: Z (Receiver Output) Pin 14: Y (Receiver Output) Pin 15: GND (Ground) Pin 16: Vcc (Power Supply)

Functional Features

• Half-duplex communication
• High-speed data transmission
• Low power consumption
• ESD protection for robustness
• Hot plug capability for ease of use
• Wide operating temperature range for industrial applications

Advantages and Disadvantages

Advantages: - Supports high data rates, up to 20Mbps - Provides reliable communication in industrial environments - Offers ESD protection for enhanced durability - Low quiescent current consumption for energy efficiency - Allows hot plugging without damaging the IC

Disadvantages: - Limited to half-duplex communication only - Requires a 3.3V power supply

Working Principles

The ISL32455EIBZ-T operates based on the RS-485/RS-422 standard, which enables long-distance data transmission over twisted pair cables. It uses differential signaling to achieve noise immunity and can support multiple transceivers on the same bus.

When transmitting data, the driver inputs (A and B) receive digital signals and convert them into balanced differential voltages. The receiver outputs (Y and Z) convert the received differential voltages back into digital signals.

The DE (Driver Output Enable) and /RE (Receiver Output Enable) pins control the direction of data flow. When DE is active and /RE is inactive, the IC operates in transmit mode. Conversely, when DE is inactive and /RE is active, the IC operates in receive mode.

Detailed Application Field Plans

The ISL32455EIBZ-T is widely used in various industrial applications that require reliable and high-speed communication over long distances. Some common application fields include:

1. Factory Automation: Used for connecting sensors, actuators, and control devices in automated manufacturing systems.
2. Building Automation: Enables communication between different building management systems, such as HVAC, lighting, and security systems.
3. Process Control: Facilitates data exchange between different components of a process control system, ensuring efficient monitoring and control.
4. Energy Management: Allows for communication between smart meters, energy monitoring systems, and energy management software.
5. Transportation Systems: Used in railway signaling, traffic control, and vehicle-to-vehicle communication systems.

Detailed and Complete Alternative Models

1. MAX485ESA+: A similar RS-485/RS-422 transceiver with 5V power supply compatibility.
2. SN65HVD485EDR: Another RS-485 transceiver with extended temperature range and enhanced ESD protection.
3. LTC2857IGN#PBF: A low-power RS