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).

• Bus-Pin Fault Protection to:
  • > ±70 V (’HVD1785, 86, 91, 92)
  • > ±30 V (’HVD1787, 93)
• 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
  • Low Standby Supply Current, 1 μA Typical
  • ICC 5 mA Quiescent During Operation
• Power-Up, Power-Down Glitch-Free Operation
• APPLICATIONS
  • Designed for RS-485 and RS-422 Networks

All other trademarks are the property of their respective owners

• Number of receivers
• 1
• Number of transmitters
• 1
• Duplex
• Full
• Supply voltage (Nom) (V)
• 5
• Signaling rate (Max) (Mbps)
• 0.115
• IEC 61000-4-2 contact (+/- kV)
• —
• Fault protection (V)
• -70 to 70
• Common mode range
• -20 to 25
• Number of nodes
• 256
• Features
• Fault protection
• Isolated
• No
• ICC (Max) (mA)
• 6
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 105

SN65HVD1791的完整型号有：SN65HVD1791D、SN65HVD1791DR，以下是这些产品的关键参数及官网采购报价：

SN65HVD1791D，工作温度：-40 to 105，封装：SOIC (D)-14，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN65HVD1791D的批量USD价格：2.064（1000+）

SN65HVD1791DR，工作温度：-40 to 105，封装：SOIC (D)-14，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN65HVD1791DR的批量USD价格：1.72（1000+）

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