65HVD1791 Series

70-V Fault-Protected RS-485 Transceivers Full-Duplex with -20 to +25 common mode

Catalog(2 parts)

Part	Voltage - Supply▲▼	Voltage - Supply▲▼	Receiver Hysteresis▲▼	Type	Package / Case▲▼	Package / Case▲▼	Package / Case	Protocol	Data Rate▲▼	Operating Temperature▲▼	Operating Temperature▲▼	Duplex	Mounting Type
Texas Instruments SN65HVD1791DRG4 1/1 Transceiver Full RS422, RS485 14-SOIC	5.5 V	4.5 V	0.05000000074505806 V	Transceiver	0.003899999894201755 m	0.003911599982529879 m	14-SOIC	RS422, RS485	117760 bit/s	-40 °C	105 °C	Full	Surface Mount
Texas Instruments SN65HVD1791DR 1/1 Transceiver Full RS422, RS485 14-SOIC	5.5 V	4.5 V	0.05000000074505806 V	Transceiver	0.003899999894201755 m	0.003911599982529879 m	14-SOIC	RS422, RS485	117760 bit/s	-40 °C	105 °C	Full	Surface Mount

Key Features

• 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 RequirementBus I/O Protection±16 kV JEDEC HBM ProtectionReduced Unit Load for Up to 256 NodesFailsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus ConditionsLow Power ConsumptionLow Standby Supply Current, 1 µA TypicalICC5 mA Quiescent During OperationPower-Up, Power-Down Glitch-Free OperationBus-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 RequirementBus I/O Protection±16 kV JEDEC HBM ProtectionReduced Unit Load for Up to 256 NodesFailsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus ConditionsLow Power ConsumptionLow Standby Supply Current, 1 µA TypicalICC5 mA Quiescent During OperationPower-Up, Power-Down Glitch-Free Operation

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). 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).