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SN65HVD1781QDRQ1

SN65HVD1781QDRQ1 RS-485/RS-422 Transceiver, 1Mbps, AEC-Q100

MPNSN65HVD1781QDRQ1
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Texas Instruments SN65HVD1781QDRQ1 automotive-grade half-duplex RS-485/RS-422 transceiver, 1/1 driver/receiver, 1Mbps data rate, 3.15V-5.5V supply, 50mV receiver hysteresis, -40°C to 125°C, 8-SOIC package.

$5.7400Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q100
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN65HVD1781QDRQ1 specifications
ParameterValue
TypeTransceiver
SeriesAutomotive, AEC-Q100
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

Supply voltage flexibility — 3.3V or 5V bus without a translator

The 3.15V to 5.5V supply range means this transceiver can be powered from a standard 3.3V rail in a mixed-voltage system or from a 5V rail in legacy industrial networks. This is a practical advantage when the same PCB design must support both 3.3V and 5V variants across different product tiers.

Package and footprint — 8-SOIC, hand-solderable

The 1.27 mm pin pitch is easy to route on a two-layer PCB. For a maker or small-run project, the SOIC-8 footprint is breadboard-friendly with a SOIC-to-DIP adapter — no fine-pitch or BGA challenges.

Frequently asked questions

Does SN65HVD1781QDRQ1 support both 3.3V and 5V supply?

This makes it compatible with both 3.3V logic systems and legacy 5V RS-485 buses.

What is the maximum data rate of SN65HVD1781QDRQ1?

The data rate is 1Mbps, suitable for most industrial automation, building management, and automotive communication links that run RS-485 at moderate speed.