Features
- 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
- 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
Description
The RAA788152 5V half-duplex powered RS-485/RS-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.
Parameters
| Attributes | Value |
|---|---|
| Temp. Range (°C) | -40 to +105°C, -40 to +125°C |
| Devices Allowed on Bus | 256 |
Application Block Diagrams
 | Smart Home Central Control Box Smart home control box integrates devices, monitors conditions, and manages lighting and appliances. |
 | Modbus ASCII/RTU Slave Board Low-power Modbus design enables factory automation and environmental monitoring control. |
 | OTA-Enabled PLC Module High‑performance PLC module enabling fast OTA updates, precise real‑time control, and remote management for reliable, connected industrial systems. |
Additional 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
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Renesas Boards & Kits
5V Half-Duplex RS-485 Transceivers Evaluation Board
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... Read More
Knowledge Base
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What is the EFT Performance of Renesas's new RAA78815x Family of RS-485/422 Transceivers?
... Bus Voltage during EFT Test with 5kHz Repetition Rate Test Level Test Voltage (kV) Repetition Frequency (kHz) Transceiver 1 0.25 5 or 100 RAA788150 RAA788152 RAA788153 RAA788155 RAA788156 RAA788158 2 0.5 5 or 100 3 1 5 or 100 4 2 5 or 100 X 5 5 and ...
Oct 11, 2021 -
What Applications might see EFT Problems?
This type of interference has the potential to occur in a large amount of different electrical systems and devices. The interconnection of relays to power mains offers many situations for potential arching and electrical transients. Commonly they occur in AC Power Mains, Electrical Systems & Subsystems, and Ethernet & RS ...
Oct 11, 2021 -
What is the Standard that tests for EFT Immunity?
The standard that defines the test for assessing a systems’ immunity to fast electrical transients is IEC61000-4-4. This standard defines test voltage waveform, range of test levels, test equipment, test set-up, and test procedure. Its object is to establish a common and reproducible reference for evaluating the ...
Oct 11, 2021
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