Exar Corporation
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SP491EEN-L/TR
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SP491EEN-L/TR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Communication and data transmission
  • Characteristics: High-speed, low-power consumption
  • Package: Surface Mount Technology (SMT)
  • Essence: Transceiver IC for RS-485/RS-422 communication
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Supply Voltage: 3.3V to 5.5V
  • Data Rate: Up to 20 Mbps
  • Operating Temperature Range: -40°C to +85°C
  • Number of Channels: 1
  • Receiver Input Impedance: 12 kΩ
  • Driver Output Impedance: 60 Ω
  • ESD Protection: ±15kV (Human Body Model)

Detailed Pin Configuration

The SP491EEN-L/TR has a total of 8 pins:

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

Functional Features

  • Full-duplex or half-duplex operation
  • Low power consumption in shutdown mode
  • Enhanced ESD protection for robust communication
  • Wide supply voltage range for flexibility
  • Compatible with RS-485 and RS-422 standards

Advantages and Disadvantages

Advantages: - High-speed data transmission - Low power consumption - Robust ESD protection - Versatile supply voltage range

Disadvantages: - Limited number of channels (only 1)

Working Principles

The SP491EEN-L/TR is designed to facilitate reliable communication over long distances using the RS-485/RS-422 standards. It employs differential signaling to minimize noise and interference, ensuring accurate data transmission. The driver section amplifies the digital signals, while the receiver section detects and decodes incoming signals.

Detailed Application Field Plans

The SP491EEN-L/TR is widely used in various applications, including:

  1. Industrial automation systems
  2. Building automation and control networks
  3. Security systems and access control
  4. HVAC (Heating, Ventilation, and Air Conditioning) systems
  5. Telecommunications equipment
  6. Automotive electronics
  7. Medical devices

Detailed and Complete Alternative Models

  1. MAX485EESA+T
  2. SN75176BP
  3. LTC485CN8
  4. ADM485ARZ
  5. ST485BDR

These alternative models offer similar functionality and can be considered as replacements for the SP491EEN-L/TR.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af SP491EEN-L/TR i tekniske løsninger

  1. What is the operating temperature range of SP491EEN-L/TR?
    - The operating temperature range of SP491EEN-L/TR is -40°C to 85°C.

  2. What is the typical supply voltage for SP491EEN-L/TR?
    - The typical supply voltage for SP491EEN-L/TR is 3.3V.

  3. Does SP491EEN-L/TR support full-duplex communication?
    - Yes, SP491EEN-L/TR supports full-duplex communication.

  4. What is the maximum data rate supported by SP491EEN-L/TR?
    - The maximum data rate supported by SP491EEN-L/TR is 250kbps.

  5. Is SP491EEN-L/TR compatible with RS-485 and RS-422 standards?
    - Yes, SP491EEN-L/TR is compatible with both RS-485 and RS-422 standards.

  6. Can SP491EEN-L/TR be used in industrial automation applications?
    - Yes, SP491EEN-L/TR is suitable for use in industrial automation applications.

  7. What is the typical quiescent current consumption of SP491EEN-L/TR?
    - The typical quiescent current consumption of SP491EEN-L/TR is 300µA.

  8. Does SP491EEN-L/TR have built-in overvoltage protection?
    - Yes, SP491EEN-L/TR features built-in overvoltage protection.

  9. Is SP491EEN-L/TR available in a small form factor package?
    - Yes, SP491EEN-L/TR is available in a small 8-pin SOIC package.

  10. Can SP491EEN-L/TR be used in automotive electronics applications?
    - Yes, SP491EEN-L/TR is suitable for use in automotive electronics applications.