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 Typ
    • 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)
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    
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 104
-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    
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