Inicio Interfaz Transceptores RS-485 y RS-422
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Transceptores RS-485 y RS-422

SN65HVD1794

ACTIVO

Transceptor RS-485 de 70 V protegido contra fallas con inversión de cable

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SN65HVD1794

ACTIVO
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Detalles del producto

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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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos 70-V Fault-Protected RS-485 Transceivers with Cable Invert datasheet (Rev. A) 28/09/2012

Diseño y desarrollo

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Placa de evaluación

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Modelo de simulación

SN65HVD1794 IBIS Model

SLLM097.ZIP (27 KB) - Modelo IBIS
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