SN65HVD1780 70-V Fault-Protected RS-485 Transceiver | TI.com

SN65HVD1780 (ACTIVE) 70-V Fault-Protected RS-485 Transceiver

 

Description

The SN65HVD178x 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. The devices are also robust to ESD events with high levels of protection to the human-body-model specification.

The SN65HVD178x devices combine a differential driver and a differential receiver, which operate from a single power supply. In the SN65HVD1782, 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. This port features 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 125°C. These devices are pin-compatible with the industry-standard SN75176 transceiver, making them drop-in upgrades in most systems.

These devices are fully compliant with ANSI TIA/EIA 485-A with a 5-V supply and can operate with a 3.3-V supply with reduced driver output voltage for low-power applications. For applications where operation is required over an extended common-mode voltage range, see the SN65HVD1785 (SLLS872) data sheet.

Features

  • Bus-Pin Fault Protection to:
    • > ±70 V (SN65HVD1780, SN65HVD1781)
    • > ±30 V (SN65HVD1782)
  • Operation With 3.3-V to 5-V Supply Range
  • ±16-kV HBM Protection on Bus Pins
  • Reduced Unit Load for Up to 320 Nodes
  • Failsafe Receiver for Open-Circuit, Short-Circuit, and Idle-Bus Conditions
  • Low Power Consumption
    • Low Standby Supply Current, 1 µA Maximum
    • ICC 4-mA Quiescent Current During Operation
  • Pin-Compatible With Industry-Standard SN75176
  • Signaling Rates of 115 kbps, 1 Mbps, and up to 10 Mbps
  • Create a Custom Design using the SN65HVD178x with the WEBENCH® Power Designer

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WEBENCH® Designer SN65HVD1780

Tx:
Mid Channel:
Rx:
Max Data Rate:  Gbps

 
Number of UI:
PRBS:
 
Eye Diagram

Parametrics

Compare all products in RS-485/RS-422 Email Download to Excel
Part number Order Supply voltage(s) (Nom) (V) Number of TX Number 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) Features Isolated Rating Operating temperature range (C) Package Group Approx. price (US$)
SN65HVD1780 Order now 3.3
5    
1     1     Half     0.115    
   
16     -70 to 70     320     -7 to 12     6     Fault protection     No     Catalog     -40 to 105     PDIP | 8
SOIC | 8    
1.85 | 1ku    
SN65HVD1781 Order now 3.3
5    
1     1     Half     1    
   
16     -70 to 70     320     -7 to 12     6     Fault protection     No     Catalog     -40 to 105
-40 to 125    
PDIP | 8
SOIC | 8    
1.85 | 1ku    
SN65HVD1782 Order now 3.3
5    
1     1     Half     10    
   
16     -30 to 30     64     -7 to 12     6       No     Catalog     -40 to 105     PDIP | 8
SOIC | 8    
1.80 | 1ku    
SN65HVD1785 Order now 5     1     1     Half     0.115    
   
16     -70 to 70     256     -20 to 25     6     Fault protection     No     Catalog     -40 to 105     PDIP | 8
SOIC | 8    
1.45 | 1ku    
SN65HVD1786 Order now 5     1     1     Half     1    
   
16     -70 to 70     256     -20 to 25     6     Fault protection     No     Catalog     -40 to 105