特長
- 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)
説明
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.
パラメータ
| 属性 | 値 |
|---|---|
| Temp. Range (°C) | -40 to +85°C, -40 to +105°C |
| Devices Allowed on Bus | 256 |
アプリケーション・ブロック図
 | ベッドサイドモニタ リアルタイムの患者バイタルサインとコネクテッドケアを実現する拡張可能なベッドサイドモニタリングプラットフォームです。 |
 | 医療用センサプローブ 患者の安全性を確保したリアルタイム生理学的モニタリング用コンパクト低消費電力プローブ。 |
その他アプリケーション
- 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