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RAA78815x Family: 5V Differential RS-485/422 Transceivers with Enhanced ESD Protection and High EFT Immunity for Industrial and Automation Applications

RAA78815x Family: 5V Differential RS-485/422 Transceivers
RAA78815x Family: 5V Differential RS-485/422 Transceivers

Renesas Electronics Corporation has introduced the RAA78815x Family of 5V differential RS-485/422 transceivers with high output drive and additional immunity for EFT. These six new full and half-duplex ruggedized devices with ESD protection up to ±16,000V are the ideal solution for noise-sensitive industrial communication networks and meet both the RS-485 and RS-422 communication standards. These transceivers are suited for a variety of industrial networks, process control networks, building automation, long-haul network, and security camera network applications.


These new high-speed transceivers feature bus leakage currents of maximum 125 μA thereby, constituting a true 1/8-unit load and support data rates of 115kbps, 1Mbps, and 20Mbps with a performance that is characterized from -40°C to +85°C. With EFT immunity of ±5000V, the RAA78815x family delivers exceptional differential output voltages, featuring 3.1V into the RS-485-required 54Ω load. 



  • High VOD: 3.1V (Typ) into RD = 54Ω

  • ±5kV EFT immunity of bus I/O pins

  • ±16.5kV ESD protection on bus I/O pins

  • Supported data rates: 115kbps, 1Mbps, 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



  • 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



The RAA78815x transceivers are now available in MSOP and SOIC packages with pin counts ranging from 8 to 14 and an evaluation board for the new transceiver family is also available.


Component Datasheet

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