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

SN65HVD1791 (ACTIVE)

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

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

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/RS-422

 
Supply Voltage(s) (Nom) (V)
No. of TX
No. of RX
Duplex
Signaling Rate (Max) (Mbps)
IEC 61000-4-2 Contact (+/- kV)
HBM ESD (kV)
Fault Protection (V)
Number of Nodes
Common Mode Range
ICC (Max) (mA)
Isolated
Rating
Operating Temperature Range (C)
Package Group
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    
0.115     0.115     1     10     0.115     1     10     1     10     0.115    
N/A     N/A     N/A     N/A     N/A     N/A     N/A     N/A     N/A     N/A    
16     16     16     16     16     16     16     16     16     16    
-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    
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    
6     6     6     6     6     6     6     6     6     6    
No     No     No     No     No     No     No     No     No     No    
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    
SOIC     PDIP
SOIC    
PDIP
SOIC    
PDIP
SOIC    
PDIP
SOIC    
PDIP
SOIC    
PDIP
SOIC