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MAX14770/MAX14770E 高靜電現(xiàn)場總線的RS-485收發(fā)器
概述
The MAX14770E is a half-duplex, ±35kV HBM high ESD-protected transceiver for Profibus-DP® and RS-485 applications. In addition, it can be used for RS-422/V.11 communications. The MAX14770E is designed to meet IEC 61158-2, TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards.
The MAX14770E operates from a +5V supply and has true fail-safe circuitry that guarantees a logic-high receiver output when the receiver inputs are open or shorted.
The MAX14770E features a 1/4 standard-unit load receiver input impedance, allowing up to 128 1/4 unit load transceivers on the bus. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry.
The MAX14770E is available in 8-pin SO and tiny TDFN (3mm x 3mm) packages, and is specified over the extended (-40°C to +85°C) and automotive (-40°C to +125°C) temperature ranges.
關(guān)鍵特性
- ±35kV Human Body Model (HBM)
- ±20kV IEC 61000-4-2 Air Gap
- ±10kV IEC 61000-4-2 Contact
應(yīng)用/使用
| 工業(yè)向場總線 | |
| 機械編碼器 | |
| 運動控制器 | |
| Profibus-DP網(wǎng)絡(luò) | |
| RS-485網(wǎng)絡(luò) |
功能框圖
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