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Automotive, Fault-Protected RS-485 Transceivers With 3.3-V to 5-V Operation

Qty Price
1-9 $4.91
10-24 $4.42
25-99 $4.12
100-249 $3.70
250-499 $3.45
500-749 $3.00
750-999 $2.60
1000+ $2.55


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • Device Temperature Grade 1:
      –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESDClassification Level H2
    • Device CDM ESG Classification LevelC3B
  • Bus-Pin Fault Protection to: > ±70 V
  • 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 During Operation
  • Pin-Compatible With Industry-Standard SN75176
  • Signaling Rates up to 1 Mbps

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Texas Instruments  SN65HVD1781AQDRQ1

The device is designed to survive overvoltage faults such as direct shorts to powersupplies, mis-wiring faults, connector failures, cable crushes, and tool mis-applications. It isalso robust to ESD events, with high levels of protection to the human-body-modelspecification.

The SN65HVD1781A-Q1 combines a differential driver and a differential receiver, whichoperate from a single power supply. The driver differential outputs and the receiver differentialinputs 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 device suitable formultipoint applications over long cable runs. The device is characterized from –40°C to 125°C. TheSN65HVD1781A-Q1 device is pin-compatible with the industry-standard SN75176 transceiver, making ita drop-in upgrade in most systems.

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