主页 接口 RS-485 和 RS-422 收发器
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RS-485 和 RS-422 收发器

SN65HVD1794

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具有电缆反向和故障保护功能的 70V RS-485 收发器

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数据表

SN65HVD1794

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数据表 立即订购

产品详情

Number of receivers 1 Number of transmitters 1 Duplex Half Signaling rate (max) (Mbps) 0.115 Fault protection (V) -70 to 70 Common-mode range (V) -20 to 25 Number of nodes 256 Features Fault protection Isolated No Supply current (max) (µA) 6000 Rating Catalog Operating temperature range (°C) -40 to 105
Number of receivers 1 Number of transmitters 1 Duplex Half Signaling rate (max) (Mbps) 0.115 Fault protection (V) -70 to 70 Common-mode range (V) -20 to 25 Number of nodes 256 Features Fault protection Isolated No Supply current (max) (µA) 6000 Rating Catalog Operating temperature range (°C) -40 to 105
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Bus-Pin Fault Protection to > ±70 V
  • Cable Invert Function Allows Correction for Reversed Bus Pins
  • Common-Mode Voltage Range (–20 V to 25 V) More Than Doubles TIA/EIA
    485 Requirement
  • Bus I/O Protection
    • ±16 kV JEDEC HBM Protection
  • Reduced Unit Load for Up to 256 Nodes
  • Failsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus Conditions
  • Low Power Consumption
    • ICC 5 mA Quiescent During Operation
  • Power-Up, Power-Down Glitch-Free Operation
  • Bus-Pin Fault Protection to > ±70 V
  • Cable Invert Function Allows Correction for Reversed Bus Pins
  • Common-Mode Voltage Range (–20 V to 25 V) More Than Doubles TIA/EIA
    485 Requirement
  • Bus I/O Protection
    • ±16 kV JEDEC HBM Protection
  • Reduced Unit Load for Up to 256 Nodes
  • Failsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus Conditions
  • Low Power Consumption
    • ICC 5 mA Quiescent During Operation
  • Power-Up, Power-Down Glitch-Free Operation

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. The driver differential outputs and the receiver differential inputs are connected internally to for a bus port suitable for half-duplex (two-wire bus) communication. A cable invert pin (INV) allows active correction of mis-wires that may occur during installation. Upon detecting communication errors, the user can apply a logic HIGH to the INV pin, effectively inverting the polarity of the differential bus port, thereby correcting for the reversed bus wires.

These devices feature a wide common-mode voltage range, making them suitable for multi-point 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).

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. The driver differential outputs and the receiver differential inputs are connected internally to for a bus port suitable for half-duplex (two-wire bus) communication. A cable invert pin (INV) allows active correction of mis-wires that may occur during installation. Upon detecting communication errors, the user can apply a logic HIGH to the INV pin, effectively inverting the polarity of the differential bus port, thereby correcting for the reversed bus wires.

These devices feature a wide common-mode voltage range, making them suitable for multi-point 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).
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THVD2410 正在供货 具有 IEC ESD 保护功能的 3.3V 至 5V、RS-485 ±70V 故障保护收发器 Integrated ±70-V fault-protection, IEC ESD protection (12-kV contact discharge), IEC EFT (4-kV noise immunity)

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* 数据表 70-V Fault-Protected RS-485 Transceivers with Cable Invert 数据表 (Rev. A) 2012-9-28

设计与开发

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评估板

RS485-FL-DPLX-EVM — RS-485 全双工评估模块

RS-485 全双工评估模块 (EVM) 可帮助设计人员评估器件性能，支持使用任何 14 引脚 D 封装的 SN65HVD147x、SN65HVD179x、SN65HVD3x、SN65HVD5x 或 SN65HVD7x 全双工收发器快速开发和分析数据传输系统。  此 EVM 出厂时已将 SN65HVD73 焊接在电路板上。

用户指南: PDF
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评估板

RS485-HF-DPLX-EVM — RS-485 半双工评估模块

RS-485 半双工评估模块 (EVM) 可帮助设计人员评估器件性能，支持快速开发和分析采用任一 SN65HVD1x、SN65HVD2x、SN65HVD7x、SN65HVD8x 或 SN65HVD96 半双工收发器的数据传输系统。此 EVM 板没有焊接到板上的 RS-485 器件。用户可以申请样片或购买任意一种 TI RS-485 半双工器件进行评估。请参见 EVM 用户指南获取完整的兼容器件列表。
用户指南: PDF | HTML
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仿真模型

SN65HVD1794 IBIS Model

SLLM097.ZIP (27 KB) - IBIS 模型
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封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 8 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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