DS485TN/NOPB

Product Overview

• Category: Integrated Circuit
• Use: Communication and Networking
• Characteristics: High-speed, Low-power, Differential Line Transceiver
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• Essence: DS485TN/NOPB is a versatile differential line transceiver designed for bidirectional data communication on multipoint bus transmission lines.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Data Rate: Up to 20 Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Drivers/Receivers: 1 Driver, 1 Receiver
• Driver Output: ±60mA
• Receiver Input Sensitivity: ±200mV
• Driver Output Impedance: 120Ω
• Receiver Input Impedance: 12kΩ
• Protection Features: Short-Circuit Protection, Thermal Shutdown

Pin Configuration

The DS485TN/NOPB has the following pin configuration:

1. A - Driver Output A
2. B - Driver Output B
3. GND - Ground
4. Y - Receiver Output
5. Z - Receiver Output
6. Vcc - Supply Voltage
7. RO - Receiver Output Enable
8. DI - Driver Input

Functional Features

• Supports half-duplex communication mode
• Provides fail-safe receiver inputs
• Allows up to 32 transceivers on the bus
• Supports extended common-mode range
• Offers thermal shutdown protection
• Enables short-circuit protection

Advantages and Disadvantages

Advantages

• High-speed data transmission
• Low power consumption
• Robust and reliable communication
• Wide operating temperature range
• Easy integration into existing systems

Disadvantages

• Limited to half-duplex communication
• Requires external components for complete functionality
• Relatively higher cost compared to non-differential transceivers

Working Principles

The DS485TN/NOPB operates on the principle of differential signaling. It uses a balanced transmission line to transmit data, which provides noise immunity and allows for long-distance communication. The driver converts the digital signals into differential voltages, while the receiver detects and amplifies the differential signals back into digital form.

Detailed Application Field Plans

The DS485TN/NOPB is widely used in various applications, including:

1. Industrial Automation: Used for communication between PLCs (Programmable Logic Controllers), sensors, and actuators in industrial control systems.
2. Building Automation: Enables communication between HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting controls, and security systems.
3. Automotive Electronics: Facilitates communication between different electronic modules in vehicles, such as engine control units, body control modules, and infotainment systems.
4. Telecommunication Systems: Used for data transmission in telecommunication networks, including base stations, routers, and switches.
5. Renewable Energy Systems: Enables communication between solar inverters, wind turbines, and energy management systems.

Detailed and Complete Alternative Models

1. MAX485 - Similar specifications and pin configuration, offered by Maxim Integrated.
2. SN75176 - Compatible alternative with comparable performance, available from Texas Instruments.
3. LTC2850 - Low-power differential transceiver with extended temperature range, manufactured by Linear Technology.

These alternative models provide similar functionality and can be considered as substitutes for the DS485TN/NOPB.

In conclusion, the DS485TN/NOPB is a versatile differential line transceiver designed for high-speed bidirectional data communication. It offers various advantages such as robustness, low power consumption, and wide operating temperature range. However, it has limitations in terms of half-duplex communication and external component requirements. The DS485TN/NOPB finds applications in industrial automation, building automation, automotive electronics, telecommunication systems, and renewable energy systems. Alternative models like MAX485, SN75176, and LTC2850 provide similar functionality and can be used as substitutes.