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70-V Fault-Protected RS-485 Transceivers

Same as: SN65HVD1781DG4   This part number is identical to the part number listed above. You can only order quantities of the part number listed above.

US ECCN: EAR99 US/Local Export Classification Number

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
SOIC (D) | 8 75 | TUBE
-40 to 125
Package | Pins SOIC (D) | 8
Package qty | Carrier: 75 | TUBE
Operating temperature range (°C) -40 to 125
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Features for the SN65HVD1781

  • 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 DuringOperation
  • 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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Description for the SN65HVD1781

The SN65HVD178x devices are designed to survive overvoltage faults such as direct shortsto 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-modelspecification.

The SN65HVD178x devices combine a differential driver and a differential receiver, whichoperate from a single power supply. In the SN65HVD1782, the driver differential outputs and thereceiver 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 thedevices suitable for multipoint applications over long cable runs. These devices are characterizedfrom –40°C to 125°C. These devices are pin-compatible with the industry-standard SN75176transceiver,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 canoperate with a 3.3-V supply with reduced driver output voltage for low-power applications. Forapplications where operation is required over an extended common-mode voltage range, see theSN65HVD1785 (SLLS872) data sheet.


Qty Price (USD)
1-99 4.12
100-249 3.359
250-999 2.64
1,000+ 2.239

Additional package qty | carrier options

Package qty | Carrier 2,500 | LARGE T&R
Inventory 1
Qty | Price (USD) 1ku | 1.791 1-99 3.618 100-249 3.17 250-999 2.223 1,000+ 1.791
Custom reel may be available