SN65HVD1791中文资料具有故障保护功能的 70V RS-485 全双工收发器，共模范围从 -20 至 +25数据手册TI规格书

描述 Description

These devices are designed to survive overvoltage faults such as direct shorts to power supplies, mis-wiring faults, connector failures, cable crushes, and tool mis-applications. They are also robust to ESD events, with high levels of protection to human-body model specifications.

These devices combine a differential driver and a differential receiver, which operate from a single power supply. In the ’HVD1785, ’HVD1786, and ’HVD1787, the driver differential outputs and the receiver differential inputs are connected internally to form a bus port suitable for half-duplex (two-wire bus) communication. In the 'HVD1793, the driver differential outputs and the receiver differential inputs are separate pins, to form a bus port suitable for full-duplex (four-wire bus) communication. These ports feature a wide common-mode voltage range, making the devices suitable for multipoint applications over long cable runs. These devices are characterized from –40°C to 105°C.

For similar features with 3.3-V supply operation, see the SN65HVD1781 (SLLS877).

特性 Features

• Bus-Pin Fault Protection to:
• > ±30 V (’HVD1787, 93)
• Common-Mode Voltage Range (–20 V to 25 V) More Than Doubles TIA/EIA 485 Requirement
• ±16 kV JEDEC HBM Protection
• Reduced Unit Load for Up to 256 Nodes
• Low Power Consumption
• ICC 5 mA Quiescent During Operation
• Power-Up, Power-Down Glitch-Free Operation
• Designed for RS-485 and RS-422 Networks

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简介

SN65HVD1791属于集成电路（IC）的驱动器接收器收发器。由TI制造生产的SN65HVD1791驱动器，接收器，收发器该系列产品的主要功能是提供必需的硬件资源，以通过延长电缆或印制线进行通信。确切的功能会因所采用的通信协议而异，可能包括诸如瞬态抑制之类的功能，这些功能对于通信用途可能并非绝对必要，但对于可能的使用环境却是明智之选。