The RTKA788152DE0000BU RS-485 evaluation board is used to evaluate the half-duplex transceivers of the RAA78815x family of RS-485 transceivers.

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.


  • Single 115kbps half-duplex transceiver
  • RAA788152 (115kbps version currently installed) can be unsoldered and replaced by RAA788155 (1Mbps version) or RAA788158 (20Mbps version)
  • Placeholders for fail-safe biasing resistors
  • Configuration jumpers to operate the transceiver as transmitter or receiver, or as a transmitter with loopback



  • 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


Document title Document type Type Date Date
PDF 1.08 MB Manual - Development Tools
PDF 2.01 MB 日本語 Application Note
PDF 617 KB Datasheet
3 items

Design & Development

Software & Tools

Software Downloads

Software title Software type Type Date Date
ZIP 371 KB PCB Design Files
1 item

Sample Code

Sample Code

Title Type Date Date
ZIP 6.53 MB 日本語
Application: Industrial, IoT Applications
Compiler: CC-RL Function: Communication Interface IDE: e2 studio
Sample Code
1 item


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.