Texas Instruments
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SN75179BDE4
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SN75179BDE4

Product Overview

  • Category: Integrated Circuit
  • Use: RS-485/RS-422 Transceiver
  • Characteristics:
    • High-speed data transmission
    • Low power consumption
    • Robust communication over long distances
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Transceiver for reliable serial communication
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 4.75V to 5.25V
  • Data Rate: Up to 32 Mbps
  • Number of Drivers/Receivers: 1/1
  • Operating Temperature Range: -40°C to +85°C
  • ESD Protection: ±15kV HBM (Human Body Model)
  • RoHS Compliant: Yes

Detailed Pin Configuration

The SN75179BDE4 has a total of 8 pins:

  1. A - Driver Output A
  2. B - Driver Output B
  3. GND - Ground
  4. Y - Receiver Output
  5. Z - Receiver Input
  6. VCC - Power Supply
  7. RE - Receiver Enable
  8. DE - Driver Enable

Functional Features

  • Differential Bus Transceiver: Enables bidirectional data transmission over twisted-pair cables.
  • Driver and Receiver Enable Control: Allows control over the direction of data flow.
  • Thermal Shutdown Protection: Prevents damage due to excessive temperature.
  • Fail-Safe Receiver: Maintains a high output level when inputs are open or shorted.

Advantages and Disadvantages

Advantages: - High-speed data transmission capability - Low power consumption - Reliable communication over long distances - Built-in protection against electrostatic discharge (ESD)

Disadvantages: - Limited number of drivers/receivers (1/1) - Requires external components for complete functionality

Working Principles

The SN75179BDE4 is designed to facilitate reliable communication in RS-485/RS-422 networks. It utilizes differential signaling to transmit data over long distances, providing noise immunity and robustness. The driver and receiver enable control pins allow the user to control the direction of data flow. The fail-safe receiver ensures a high output level when inputs are open or shorted, enhancing system reliability.

Detailed Application Field Plans

The SN75179BDE4 is widely used in various applications, including:

  1. Industrial Automation: Enables communication between PLCs (Programmable Logic Controllers), sensors, and actuators in harsh industrial environments.
  2. Building Automation: Facilitates communication between HVAC systems, lighting controls, and security devices.
  3. Telecommunications: Supports reliable data transmission in telecommunication networks, such as Ethernet switches and routers.
  4. Automotive Electronics: Used in automotive applications like vehicle diagnostics, infotainment systems, and body control modules.

Detailed and Complete Alternative Models

  1. MAX485EESA+: Similar RS-485/RS-422 transceiver with enhanced ESD protection.
  2. LTC2850IMS#PBF: Low power RS-485 transceiver with wide supply voltage range.
  3. ADM2485BRWZ: Isolated RS-485 transceiver with integrated transformer driver.

These alternative models offer similar functionality and can be considered as alternatives to the SN75179BDE4.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN75179BDE4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SN75179BDE4 in technical solutions:

  1. Q: What is SN75179BDE4? A: SN75179BDE4 is a differential driver and receiver IC commonly used for RS-485 communication.

  2. Q: What is RS-485 communication? A: RS-485 is a standard for serial communication that allows multiple devices to communicate over long distances using balanced differential signaling.

  3. Q: What is the maximum data rate supported by SN75179BDE4? A: SN75179BDE4 supports data rates up to 20 Mbps, making it suitable for high-speed communication applications.

  4. Q: Can SN75179BDE4 be used for half-duplex communication? A: Yes, SN75179BDE4 can be configured for both half-duplex and full-duplex communication modes.

  5. Q: What is the operating voltage range of SN75179BDE4? A: SN75179BDE4 operates from a single power supply voltage ranging from 4.75V to 5.25V.

  6. Q: Does SN75179BDE4 have built-in protection features? A: Yes, SN75179BDE4 has built-in protection features like thermal shutdown and short-circuit protection to ensure reliable operation.

  7. Q: Can SN75179BDE4 be used in industrial environments? A: Yes, SN75179BDE4 is designed to operate in harsh industrial environments with extended temperature ranges and robust ESD protection.

  8. Q: How many devices can be connected on an RS-485 bus using SN75179BDE4? A: SN75179BDE4 supports up to 32 devices on an RS-485 bus, allowing for multi-node communication networks.

  9. Q: Does SN75179BDE4 require external termination resistors? A: Yes, SN75179BDE4 requires external termination resistors at both ends of the communication bus to minimize reflections and ensure signal integrity.

  10. Q: Can SN75179BDE4 be used in automotive applications? A: Yes, SN75179BDE4 is suitable for automotive applications due to its wide operating temperature range and compliance with automotive standards.

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