Interface

Overview

The RAA788156 5V full-duplex powered RS-485/422 transceiver features high output drive and high EFT and ESD protection. The device is immune to ±5kV IEC 61000-4-4 EFT transients and can withstand up to ±16.5kV IEC 61000-4-2 ESD strikes without latch-up.

The RAA78815x family includes half and full-duplex transceivers with active-high driver-enable pins and active-low receiver-enable pins. These transceivers support data rates of 115kbps, 1Mbps and 20Mbps with a performance that is characterized from -40 °C to +85 °C.

RAA788156 - Typical Operating Circuit for Full-Duplex Transceiver
RAA788156 - Block Diagram
RAA788156 - Pin Assignment (10-MSOP)
RAA788156 - Pin Assignment (14-SOIC)
RAA788156 - Typical Operating Circuit for Full-Duplex Transceiver
RAA788156 - Block Diagram
RAA788156 - Pin Assignment (10-MSOP)
RAA788156 - Pin Assignment (14-SOIC)
  • High VOD: 3.1V (Typ) into RD = 54Ω
  • ±5kV EFT immunity of bus I/O pins
  • ±10kV ESD protection on bus I/O pins
  • Supported data rates: 20Mbps
  • Full fail-safe outputs for open or shorted inputs
  • Hot plug capability
  • 1/8 unit load
  • Allows for up to 512 transceivers on the bus
  • Low supply current (driver disabled): 550μA
  • Ultra-low shutdown current: 70nA
48V Position Control Solution

Applications

  • Industrial networks in factory automation
  • Building automation: lighting, elevators, HVAC
  • Industrial process control networks
  • Security camera networks
  • Networks with star topology
  • Long-haul networks in coal mines and oil rigs
  • High node-count networks
  • Automated utility e-meter reading systems

Documentation

Title Type Date
RAA78815x Datasheet
PDF594 KB
Datasheet
R15AN0011: FAQs: RS-485 Transceivers
PDF366 KB
Application Note
R15AN0006: EFT Immunity of the RAA78815x Family of 5V RS-485/RS-422 Transceivers
PDF472 KB
Application Note
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses
PDF178 KB
Application Note
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers
PDF513 KB
Application Note
AN1990: RS-485 Transceivers in J1708 Physical Layer Applications of Heavy Duty Vehicles
PDF826 KB
Application Note
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses
PDF443 KB
Application Note
AN1986: External Fail-Safe Biasing of RS-485 Networks
PDF582 KB
Application Note
AN1989: RS-422 vs RS-485: Similarities and Key Differences
PDF440 KB
Application Note
AN1976: Important Transient Immunity Tests for RS-485 Networks
PDF338 KB
Application Note
AN1977: Transient Voltage Suppressors: Operation and Features
PDF365 KB
Application Note
AN1980: Ground Potential Differences: Origin and Remedies
PDF375 KB
Application Note
Analog ICs Brochure
PDF4.91 MB日本語
Brochure
Transceivers Brochure
PDF2.95 MB
Brochure
TB506: Functional Principles of RS-485 Drivers and Receivers
PDF156 KB
Other
TB511: The Unit Load Concept
PDF253 KB
Other
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity
PDF254 KB
Other
PA16061 - Introduce New T-type End Plug for n-SOIC rail (packing tube)
PDF106 KB
Product Advisory
PCN22018 - MSL Re-Classification for listed Renesas MSOP and nSOIC products
PDF178 KB
Product Change Notice
RS-485: Transmitting Full-Duplex Data over Single Twisted-Pair Cable
PDF438 KB
Report
TB509: Detecting Bus Signals Correctly with Failsafe Biased RS-485 Receivers
PDF266 KB 简体中文
Technical Brief
R70TB0002: Understanding the Differences in ESD Device-Level Testing
PDF188 KB
Technical Brief
How to Simplify Industrial PC Interfaces
PDF920 KB 简体中文
White Paper

Design & Development

ECAD Models

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Product Options

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    RAA7881562GSP#AB0
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    		 SOICN Reel 2500 Get Samples,
    RAA7881562GSU#AB0
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    		 MSOP Tube 1960 Get Samples,
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    		MSOP Reel 2500
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    Support

    Contact Technical Support
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    RS 485, RS 422, & RS 232 FAQs
    Interface & Connectivity Forum
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    RAA78815x Family of 5V RS-485/422 Transceivers with +/-5KV EFT Immunity

    Overview of the key features, advantages and target applications for the RAA78815x family of 5V RS-485/422 transceivers with +/-5KV EFT immunity.

    Video List
    RAA78815x Family of 5V RS-485/422 Transceivers with +/-5KV EFT Immunity

    News & Blog Posts

    Electrical Fast Transient Performance of Renesas’ RAA78815x Family of 5V RS-485 Transceivers Blog Post Sep 29, 2021