STMicroelectronics
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ST485ABDR
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ST485ABDR

Product Overview

Category

ST485ABDR belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for communication purposes in various applications.

Characteristics

  • High-speed data transmission
  • Low power consumption
  • Robustness and reliability
  • Wide operating voltage range

Package

ST485ABDR is available in a small outline package (SOIC) with 8 pins.

Essence

The essence of this product lies in its ability to facilitate reliable and efficient communication between different devices.

Packaging/Quantity

ST485ABDR is typically packaged in reels, with each reel containing a specific quantity of ICs.

Specifications

  • Operating Voltage Range: 4.5V to 5.5V
  • Data Rate: Up to 20 Mbps
  • Number of Pins: 8
  • Temperature Range: -40°C to +85°C
  • Supply Current: 300µA (typical)

Detailed Pin Configuration

  1. A
  2. B
  3. GND
  4. Y
  5. Z
  6. RE
  7. DE
  8. VCC

Functional Features

  • Differential bus transceiver
  • ESD protection on bus pins
  • Receiver input threshold hysteresis
  • Driver output slew rate control

Advantages

  • High-speed data transmission capability
  • Low power consumption for energy efficiency
  • Robustness against electrostatic discharge (ESD)
  • Versatile operating voltage range

Disadvantages

  • Limited temperature range (-40°C to +85°C)
  • Requires external components for complete functionality

Working Principles

ST485ABDR operates as a differential bus transceiver, facilitating bidirectional communication between devices. It uses a balanced line driver and receiver to transmit and receive data over a twisted-pair cable. The device incorporates ESD protection on the bus pins, ensuring reliability in harsh environments.

Detailed Application Field Plans

ST485ABDR finds applications in various fields, including:

  1. Industrial automation
  2. Building automation
  3. Automotive systems
  4. Telecommunications
  5. Medical equipment

Alternative Models

Other alternative models that can be considered as replacements for ST485ABDR include:

  1. MAX485
  2. SN65HVD485
  3. LTC485
  4. ADM485
  5. SP485

These models offer similar functionality and can be used interchangeably depending on specific requirements.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням ST485ABDR у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of ST485ABDR in technical solutions:

  1. Q: What is ST485ABDR? A: ST485ABDR is a popular RS-485 transceiver IC (integrated circuit) used for serial communication in industrial and automotive applications.

  2. Q: What is the operating voltage range of ST485ABDR? A: The operating voltage range of ST485ABDR is typically between 4.5V and 5.5V.

  3. Q: Can ST485ABDR be used for half-duplex communication? A: Yes, ST485ABDR supports half-duplex communication, where data can be transmitted and received on a single pair of wires.

  4. Q: What is the maximum data rate supported by ST485ABDR? A: ST485ABDR can support data rates up to 20 Mbps, making it suitable for high-speed communication requirements.

  5. Q: Is ST485ABDR compatible with different logic levels? A: Yes, ST485ABDR is compatible with both TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic levels.

  6. Q: Can ST485ABDR be used in harsh environments? A: Yes, ST485ABDR is designed to operate reliably in harsh industrial environments, with features like ESD protection and wide temperature range.

  7. Q: Does ST485ABDR require external components for operation? A: Yes, ST485ABDR requires external resistors for termination and biasing, as well as capacitors for stability.

  8. Q: Can ST485ABDR be used in multi-drop networks? A: Yes, ST485ABDR is commonly used in multi-drop networks, where multiple devices can be connected on a single bus.

  9. Q: What is the maximum distance supported by ST485ABDR? A: The maximum distance supported by ST485ABDR depends on factors like cable quality and data rate, but it can typically reach several hundred meters.

  10. Q: Is ST485ABDR compatible with other RS-485 transceivers? A: Yes, ST485ABDR is compatible with other RS-485 transceivers, allowing for interoperability in systems that use different transceiver ICs.

Please note that these answers are general and may vary depending on specific application requirements and datasheet specifications.