Overview
Description
The RAA788178 3V half-duplex powered RS-485/RS-422 transceiver features a high output drive and high EFT and ESD protection. The device is immune to ±3kV IEC 61000-4-4 EFT transients and can withstand up to ±16.5kV IEC 61000-4-2 ESD strikes without latch‑up.
The RAA78817x 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 250kbps, 500kbps, and 20Mbps with a performance that is characterized from -40 °C to +85 °C.
Features
- IEC 61000 ESD protection on RS-485 I/O pins: ±16.5kV
- Class 3 ESD level on all other pins: >7kV HBM
- ±3kV EFT immunity of bus I/O pins
- Full fail-safe (open, short, terminated/floating) receivers
- Hot plug - Tx and Rx outputs remain three-state during power-up
- True 1/8 unit load allows up to 256 devices on the bus
- Single 3.3V supply
- High data rates: up to 20Mbps
- Low quiescent supply current: 800μA (Max)
- Ultra-low shutdown supply current: 10nA
- -7V to +12V common-mode input/output voltage range
- Half and full duplex pinouts
- Current limiting and thermal shutdown for driver overload protection
- Tiny MSOP packages consume 50% less board space
- Pb-free (RoHS compliant)
Comparison
Applications
Applications
- Industrial networks in factory automation
- Building automation: lighting, elevators, HVAC
- Industrial process control networks
- Security camera networks
- Networks with a star topology
- Long-haul networks in coal mines and oil rigs
- High node-count networks
- Automated utility e-meter reading systems
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
RAA7881782GSP#AB0 Active Samples Available
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|
SOICN | Tube | 3 | 0.9125 | Get Samples, |
| SOICN | Reel | 3 | |||
RAA7881782GSU#AB0 Active Samples Available
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|
MSOP | Tube | 2 | 1.084 | Get Samples, |
| MSOP | Reel | 2 |
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Videos & Training
Overview of the key features, advantages and target applications for the RAA78817x family of 3.3V RS-485/422 transceivers with +/-3kV EFT immunity and the RAA78815x family of 5V RS-485/422 transceivers with +/-5KV EFT immunity.
News & Blog Posts
| Blog Post | Oct 19, 2023 |
