SN65HVD08 3.3/5-V RS-485 Transceiver |

SN65HVD08 (ACTIVE) 3.3/5-V RS-485 Transceiver



The SN65HVD08 combines a 3-state differential line driver and differential line receiver designed for balanced data transmission and interoperation with ANSI TIA/EIA-485-A and ISO-8482E standard-compliant devices.

The wide supply voltage range and low quiescent current requirements allow the SN65HVD08s to operate from a 5-V power bus in the cable with as much as a 2-V line voltage drop. Busing power in the cable can alleviate the need for isolated power to be generated at each connection of a ground-isolated bus.

The driver differential outputs and receiver differential inputs connect internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus whenever the driver is disabled or not powered. The drivers and receivers have active-high and active-low enables respectively, which can be externally connected together to function as a direction control.


  • Operates With a 3-V to 5.5-V Supply
  • Consumes Less Than 90-mW Quiescent Power
  • Open-Circuit, Short-Circuit, and Idle-Bus Failsafe
  • 1/8th Unit-Load (up to 256 nodes on the bus)
  • Bus-Pin ESD Protection Exceeds 16-kV HBM
  • Driver Output Voltage Slew-Rate Limited for
    Optimum Signal Quality at 10 Mbps
  • Electrically Compatible With ANSI TIA/EIA-485


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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) Isolated Rating Operating temperature range (C) Package Group Approx. price (US$)
SN65HVD08 Order now 3.3
1     1     Half     10         16     -9 to 14     256     -7 to 12     16     No     Catalog     -40 to 85     PDIP | 8
SOIC | 8    
1.81 | 1ku    
SN75HVD08 Order now 5     1     1     Half     10         16     -9 to 14     256     -7 to 12     16     No     Catalog     0 to 70     PDIP | 8
SOIC | 8    
1.65 | 1ku