65HVD1785 Series

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

Catalog(3 parts)

Part	Mounting Type	Protocol	Duplex	Voltage - Supply▲▼	Voltage - Supply▲▼	Package / Case	Package / Case▲▼	Package / Case▲▼	Supplier Device Package	Type	Operating Temperature▲▼	Operating Temperature▲▼	Receiver Hysteresis▲▼	Data Rate▲▼
Texas Instruments SN65HVD1785P 1/1 Transceiver Half RS422, RS485 8-PDIP	Through Hole	RS422, RS485	Half	5.5 V	4.5 V	8-DIP	0.007619999814778566 m	0.007619999814778566 m	8-PDIP	Transceiver	-40 °C	105 °C	0.05000000074505806 V	117760 bit/s
Texas Instruments SN65HVD1785DR 1/1 Transceiver Half RS422, RS485 8-SOIC	Surface Mount	RS422, RS485	Half	5.5 V	4.5 V	8-SOIC	0.003899999894201755 m		8-SOIC	Transceiver	-40 °C	105 °C	0.05000000074505806 V	117760 bit/s
Texas Instruments SN65HVD1785DRG4 1/1 Transceiver Half RS422, RS485 8-SOIC	Surface Mount	RS422, RS485	Half	5.5 V	4.5 V	8-SOIC	0.003899999894201755 m		8-SOIC	Transceiver	-40 °C	105 °C	0.05000000074505806 V	117760 bit/s

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).