Renesas' half duplex and full duplex RS-485/RS-422 transceivers are available in a variety of speed grades to address any application needing reliable data transmission over twisted pair wiring.

RS-485 uses differential signals to enable long-distance data transmission, even in noisy environments. Also, the conventional RS-422 has been improved and its functionality has been expanded. RS-485 allows the use of up to 32 devices on the same data line. All of the slave devices on the RS-485 bus can communicate with the other 32 slave devices without having to go through the master device.

Features of the Renesas' RS-485/RS-422 Products

  • A line-up of various products, according to the needs of the system
    • High-speed communication support(~40Mbps)
    • PROFIBUS® support
    • Insulated products
    • 125 ℃ operation
  • Highest levels of noise tolerance and ESD protection

文档和下载

文档标题 其他语言 类型 文档格式 文件大小 日期
应用指南 &白皮书
An Overview of Electromagnetic and Lightning Induced Voltage Transients 应用文档 PDF 677 KB
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses 应用文档 PDF 178 KB
3.3V High-Speed Opto-Isolated RS-485 Interface with RV1S9160A and ISL3178E 应用文档 PDF 247 KB
How to Simplify Industrial PC Interfaces English 白皮书 PDF 1010 KB
RS-485收发器教程 English 白皮书 PDF 474 KB
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers 应用文档 PDF 513 KB
Design Considerations for High-Speed RS-485 Data Links 白皮书 PDF 624 KB
AN1990: RS-485 Transceivers in J1708 Physical Layer Applications of Heavy Duty Vehicles 应用文档 PDF 826 KB
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses 应用文档 PDF 443 KB
AN1986: External Fail-Safe Biasing of RS-485 Networks 应用文档 PDF 582 KB
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E 应用文档 PDF 335 KB
AN1989: RS-422 vs RS-485: Similarities and Key Differences 应用文档 PDF 440 KB
AN1977: Transient Voltage Suppressors: Operation and Features 应用文档 PDF 365 KB
AN1980: Ground Potential Differences: Origin and Remedies 应用文档 PDF 375 KB
AN1978: Surge Protection for Intersil's Standard RS-485 Transceivers 应用文档 PDF 369 KB
AN1976: Important Transient Immunity Tests for RS-485 Networks 应用文档 PDF 338 KB
AN1979: Surge Protection simplified with Intersil's Overvoltage Protected (OVP) Transceivers 应用文档 PDF 500 KB
AN1593: Add a Loss of Signal (LOS) Indicator to Your RS-485 or RS-422 Transceiver 应用文档 PDF 559 KB
AN1475: High Temperature Behavior of ISL3178AE 应用文档 PDF 299 KB
AN1474: High Temperature Behavior of ISL3158AE 应用文档 PDF 334 KB
AN9867: End of Life Derating: A Necessity or Overkill 应用文档 PDF 338 KB
其他
R15ZZ0002: Calculating the Power Dissipation of an RS-485 Driver 其他 PDF 150 KB
R15ZZ0001: Calculating the Power Dissipation of an RS-422 Driver 其他 PDF 165 KB
TB506: Functional Principles of RS-485 Drivers and Receivers 其他 PDF 156 KB
TB509: Detecting Bus Signals Correctly with Failsafe Biased RS-485 Receivers 其他 PDF 240 KB
TB511: The Unit Load Concept 其他 PDF 253 KB
TB347: Tape and Reel Specification for Integrated Circuits 其他 PDF 752 KB
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity 其他 PDF 254 KB