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SN65HVD1781DRG4

TI SN65HVD1781DRG4 RS-485/422 Transceiver, 1 Mbps, 8-SOIC

MPNSN65HVD1781DRG4
End of Life

Texas Instruments SN65HVD1781DRG4, RS-422/RS-485 Transceiver, Half-Duplex, 1 Driver/1 Receiver, 1 Mbps, 3.15V-5.5V, -40°C~125°C, 8-SOIC.

$6.7500Ref. price · indicative, final on quote
Texas Instruments SN65HVD1781DRG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN65HVD1781DRG4 specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage3.15V ~ 5.5V
ProtocolRS422, RS485
Operating temperature-40°C~125°C
DuplexHalf
PackageTape & Reel (TR); Cut Tape (CT)
Data rate1Mbps
Case8-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis50 mV
Number of drivers (Receivers)1/1

Product details

Industrial bus transceiver with wide supply tolerance

3.3 V supply compatibility — confirmed

Yes, this part works with a 3.3 V supply. The voltage range bottoms out at 3.15 V, so a nominal 3.3 V rail with 5% tolerance stays inside spec.

It is RoHS compliant per the standard TI green packaging. The base product number is 65HVD1781, so any suffix variant (DR, DRG4) shares the same die and parametric core.

Surface-mount 8-SOIC with 3.90 mm body width (0.154 inch). No thermal pad, no exposed paddle; just the eight pins and the usual 1.27 mm pitch.

Frequently asked questions

Can SN65HVD1781DRG4 be used with a 3.3 V supply?

Yes. The supply voltage range is 3.15 V to 5.5 V, so a nominal 3.3 V rail (with typical 5% tolerance) is well within spec. No level shifter needed between a 3.3 V MCU and this transceiver.

What is the difference between SN65HVD1781DRG4 and SN65HVD1781DR?

The DRG4 suffix indicates TI's green (RoHS-compliant) packaging. The DR suffix is an earlier non-green variant. The only difference is the lead-free / RoHS compliance level.

Is SN65HVD1781DRG4 RoHS compliant?

Yes. The G4 suffix designates TI's green, RoHS-compliant packaging. This part meets the RoHS directive for lead-free soldering processes.