SN65HVD485ED

Product Overview

Category

SN65HVD485ED belongs to the category of integrated circuits (ICs) specifically designed for use in industrial applications.

Use

This product is commonly used as a transceiver for communication between microcontrollers and various industrial devices. It enables reliable data transmission over long distances in harsh environments.

Characteristics

• Robustness: SN65HVD485ED is built to withstand extreme temperatures, voltage fluctuations, and electromagnetic interference.
• High-Speed Communication: It supports data rates up to 5 Mbps, making it suitable for applications requiring fast and efficient data transfer.
• Low Power Consumption: The IC is designed to minimize power consumption, making it ideal for battery-powered devices.
• ESD Protection: It provides electrostatic discharge (ESD) protection, ensuring the safety of connected devices.

Package

SN65HVD485ED is available in a small outline integrated circuit (SOIC) package. This package offers ease of handling and compatibility with standard PCB manufacturing processes.

Essence

The essence of SN65HVD485ED lies in its ability to facilitate reliable and efficient communication between microcontrollers and industrial devices, even in challenging operating conditions.

Packaging/Quantity

SN65HVD485ED is typically sold in reels containing a specified quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 3.3V to 5V
• Operating Temperature Range: -40°C to +85°C
• Data Rate: Up to 5 Mbps
• Number of Channels: 1 (Half-Duplex)
• Interface Type: RS-485
• ESD Protection: ±15 kV (Human Body Model)

Detailed Pin Configuration

The pin configuration of SN65HVD485ED is as follows:

1. A - Driver Output A
2. B - Driver Output B
3. GND - Ground
4. VCC - Supply Voltage
5. RO - Receiver Output
6. RE - Receiver Enable
7. DE - Driver Enable

Functional Features

• Half-Duplex Communication: SN65HVD485ED supports half-duplex communication, allowing data transmission in both directions but not simultaneously.
• Receiver Enable (RE) Pin: This pin enables or disables the receiver circuitry, allowing control over when the IC is actively listening for incoming data.
• Driver Enable (DE) Pin: This pin controls the driver circuitry, enabling or disabling the transmission of data from the microcontroller to the connected devices.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive heat.

Advantages and Disadvantages

Advantages

• Robustness ensures reliable operation in harsh industrial environments.
• High-speed communication capability facilitates fast data transfer.
• Low power consumption extends battery life in portable applications.
• ESD protection safeguards against electrostatic discharge events.

Disadvantages

• Limited to half-duplex communication, which may not be suitable for applications requiring simultaneous bidirectional data transfer.
• Requires additional external components for complete RS-485 communication implementation.

Working Principles

SN65HVD485ED operates based on the RS-485 standard, which uses differential signaling for noise immunity and long-distance communication. It converts the single-ended signals from the microcontroller into balanced differential signals for transmission over twisted-pair cables. The receiver section converts the received differential signals back into single-ended signals for the microcontroller to process.

Detailed Application Field Plans

SN65HVD485ED finds application in various industrial fields, including: - Building Automation Systems - Industrial Control Systems - Process Control Systems - HVAC (Heating, Ventilation, and Air Conditioning) Systems - Robotics and Automation - Energy Management Systems

Detailed and Complete Alternative Models

Some alternative models to SN65HVD485ED that offer similar functionality include: - MAX485 - LTC485 - ADM485 - SP3485

These alternatives can be considered based on specific application requirements, availability, and cost considerations.

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