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SN65HVD08DG4

SN65HVD08DG4 RS422/RS485 Transceiver, Half-Duplex, 3V-5.5V

MPNSN65HVD08DG4
End of Life

Texas Instruments SN65HVD08DG4, Half-Duplex RS422/RS485 Transceiver, 1/1 Driver/Receiver, 3V to 5.5V Supply, 35 mV Hysteresis, -40°C to 85°C, 8-SOIC Package.

$5.6800Ref. price · indicative, final on quote
Texas Instruments SN65HVD08DG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN65HVD08DG4 specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage3V ~ 5.5V
ProtocolRS422, RS485
Operating temperature-40°C~85°C
DuplexHalf
PackageTube
Case8-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis35 mV
Number of drivers (Receivers)1/1

Product details

Half-duplex RS422/RS485 transceiver for mixed-voltage industrial buses

Supply flexibility — one rail for 3.3V and 5V buses

A 3.3V-only system runs the transceiver without a separate 5V regulator; a legacy 5V bus accepts it directly. This eliminates a level-shifter IC and its associated propagation delay, which matters for timing closure on half-duplex turnarounds at higher baud rates.

Industrial temperature and package — field-proven footprint

The 8-SOIC (3.90 mm width) footprint is a standard layout shared across the 65HVD08 family, so a board designed for the DR variant reuses the same copper pattern.

Frequently asked questions

Is SN65HVD08DG4 compatible with 3.3V and 5V systems?

Yes. The supply voltage range of 3V to 5.5V covers both 3.3V and 5V rails, so the transceiver interfaces directly with either logic family without a level translator.

What is the difference between SN65HVD08DG4 and SN65HVD08DR?

Both are the same half-duplex RS422/RS485 transceiver in an 8-SOIC package. The DG4 suffix indicates tube packaging, while the DR suffix indicates tape-and-reel. Electrical specifications and footprint are identical.

Can SN65HVD08DG4 be used for RS422?

Yes. The transceiver explicitly supports the RS422 protocol. Note that it is half-duplex, so it handles one direction at a time on a single twisted pair — not full-duplex four-wire RS422.