ISO35
- Meets or exceeds TIA/EIA RS-485 requirements
- 1/8 unit load – Up to 256 nodes on a bus
- Signaling rates up to 1 Mbps
- Thermal shutdown protection
- Low bus capacitance – 16 pF (typical)
- 50 kV/µs typical transient immunity
- Fail-safe receiver for bus open, short, idle
- 3.3-V inputs are 5-V tolerant
- Safety and regulatory approvals
- 4000-V PK V IOTM, 560-V PK V IORM per DIN EN IEC 60747-17 (VDE 0884-17)
- 2500 V RMS isolation rating per UL 1577
- 2500 V RMS isolation rating per CSA 62368-1.
The ISO15 is an isolated half-duplex differential line transceiver while the ISO35 is an isolated full-duplex differential line driver and receiver for TIA/EIA 485/422 applications. The ISO15M and ISO35M have extended ambient temperature ratings of –55°C to 125°C while the ISO15 and ISO35 are specified over –40°C to 85°C.
These devices are ideal for long transmission lines because the ground loop is broken to allow for a much larger common-mode voltage range. The symmetrical barrier of the device is tested to provide isolatlion of 4000 V PK per VDE and 2500 V RMS per UL and CSA between the bus-line transceiver and the logic-level interface.
Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can cause damage to the transceiver and/or nearby sensitive circuitry if they are of sufficient magnitude and duration. These isolated devices can significantly increase protection and reduce the risk of damage to expensive control circuits.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | ISOx5 Isolated 3.3-V Half- and Full-Duplex RS-485 Transceivers datasheet (Rev. H) | PDF | HTML | 2023/8/18 | ||
| 證書 | VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. AA) | 2026/6/11 | ||||
| 證書 | UL Certificate of Compliance File E181974 Vol 4 Sec 2 (Rev. A) | 2026/1/8 | ||||
| Application brief | How to Isolate Signal and Power for an RS-485 System (Rev. D) | PDF | HTML | 2025/11/7 | |||
| 證書 | CSA Certificate for ISO1176DW, ISO308xDW, ISO15xDW, ISO035xDW (Rev. A) | 2025/8/20 | ||||
| 應用說明 | Isolated RS-485 Transceiver Reference Design (Rev. A) | PDF | HTML | 2022/9/23 | |||
| Application brief | Robust Isolated RS-485 Enables New Industrial Applications (Rev. C) | PDF | HTML | 2022/7/26 | |||
| Application brief | How to Isolate RS-485 for Smallest Size and Highest Reliability (Rev. C) | PDF | HTML | 2022/7/6 | |||
| 白皮書 | Why are Digital Isolators Certified to Meet Electrical Equipment Standards? | 2021/11/16 | ||||
| 白皮書 | Distance Through Insulation: How Digital Isolators Meet Certification Requiremen | PDF | HTML | 2021/6/11 |
設計與開發
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ISO485EVM — ISO485EVM 評估模組
TIDA-00486 — 具有 24 VAC 電源的隔離式 RS-485 轉 Wi-Fi 橋接器參考設計
TIDA-00486 使用我們的 SimpleLink Wi-Fi® CC3200 Internet-on-a-chip 無線 MCU 模組，在 RS-485 網路和 Wi-Fi 網路之間建立資料橋接器。ISO15 收發器提供隔離式 RS-485 介面，隔離度高達 2500VRMS。LM5160 Fly-Buck™ 電源供應器可為電路的兩部分提供隔離式和非隔離式 3.3V 輸出。設計可使用 AC 或 DC 電源供電，最大額定電壓為 30VRMS 或峰值電壓為 48V。
TIDA-00485 中提供了採用非隔離式 RS-485 介面的此設計版本。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (DW) | 16 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。