SN65HVD1794 - 具有电缆反向和故障保护功能的 70V RS-485 收发器

SN65HVD1794是TI德州仪器公司的一款无产品，SN65HVD1794是具有电缆反向和故障保护功能的 70V RS-485 收发器，本站介绍了SN65HVD1794的封装应用图解、特点和优点、功能等，并给出了与SN65HVD1794相关的TI元器件型号供参考。

SN65HVD1794 - 具有电缆反向和故障保护功能的 70V RS-485 收发器 - 无 - RS-485收发器 - 德州仪器

产品描述

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).

产品特性

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

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