70-V Fault-Protected RS-485 Transceivers Full-Duplex with -20 to +25 common mode - SN65HVD1791

SN65HVD1791 (ACTIVE)

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

 

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).

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 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

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Parametrics Compare all products in RS-485 Transceivers

 
Supply Voltage(s) (Nom) (V)
No. of TX
No. of RX
Duplex
Isolated
Signaling Rate (Max) (Mbps)
HBM ESD (kV)
IEC 61000-4-2 Contact (+/- kV)
Number of Nodes
Common Mode Range
Fault Protection (V)
Fail Safe
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
SN65HVD1791 SN65HVD1780 SN65HVD1781 SN65HVD1782 SN65HVD1785 SN65HVD1786 SN65HVD1787 SN65HVD1792 SN65HVD1793 SN65HVD1794
5    3.3
5   
3.3
5   
3.3
5   
5    5    5    5    5    5   
1    1    1    1    1    1    1    1    1    1   
1    1    1    1    1    1    1    1    1    1   
Full    Half    Half    Half    Half    Half    Half    Full    Full    Half   
No    No    No    No    No    No    No    No    No    No   
0.115    0.115    1    10    0.115    1    10    1    10    0.115   
16    16    16    16    16    16    16    16    16    16   
N/A    N/A    N/A    N/A    N/A    N/A    N/A    N/A    N/A    N/A   
256    320    320    64    256    256    64    256    256    256   
-20 to 25    -7 to 12    -7 to 12    -7 to 12    -20 to 25    -20 to 25    -20 to 25    -20 to 25    -20 to 25    -20 to 25   
-70 to 70    -70 to 70    -70 to 70    -30 to 30    -70 to 70    -70 to 70    -30 to 30    -70 to 70    -30 to 30    -70 to 70   
Idle
Open
Short   
Idle
Open
Short   
Idle
Open
Short   
Idle
Open
Short   
Idle
Open
Short   
Idle
Open
Short   
Idle
Open
Short   
Idle
Open
Short   
Idle
Open
Short   
Idle
Open
Short   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 105    -40 to 105    -40 to 105
-40 to 125   
-40 to 105    -40 to 105    -40 to 105    -40 to 105    -40 to 105    -40 to 105    -40 to 105   
14SOIC    8PDIP
8SOIC   
8PDIP
8SOIC   
8PDIP
8SOIC   
8PDIP
8SOIC   
8PDIP
8SOIC   
8PDIP
8SOIC   
14SOIC    14SOIC    8PDIP
8SOIC   
1.90 | 1ku    1.85 | 1ku    1.85 | 1ku    2.00 | 1ku    1.85 | 1ku    1.85 | 1ku    2.00 | 1ku    1.90 | 1ku    2.10 | 1ku    1.95 | 1ku