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Texas Instruments SN65HVD71DGKR — Interface & Transceivers

SN65HVD71DGKR RS422/RS485 Full-Duplex Transceiver, 400 kbps

MPNSN65HVD71DGKR
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Texas Instruments SN65HVD71DGKR, RS422/RS485 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 400kbps, 3V~3.6V, -40°C~125°C, 8-VSSOP.

$4.2600Ref. price · indicative, final on quote
Texas Instruments SN65HVD71DGKR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN65HVD71DGKR specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage3V ~ 3.6V
ProtocolRS422, RS485
Operating temperature-40°C~125°C
DuplexFull
PackageTape & Reel (TR); Cut Tape (CT)
Data rate400kbps
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Receiver hysteresis70 mV
Number of drivers (Receivers)1/1

Product details

Full-duplex wiring and the 400 kbps data rate

Full-duplex operation means the SN65HVD71DGKR uses two twisted pairs — one for transmit, one for receive — so the bus can send and receive simultaneously without a direction-control pin. At 400 kbps, the practical cable length on a typical RS-485 segment is around 4000 feet (1200 meters) before signal degradation sets in, assuming proper termination. The 70 mV hysteresis on the receiver input rejects common-mode noise that couples onto the pair in a motor-drive or PLC environment.

Frequently asked questions

Is SN65HVD71DGKR equivalent to SN65HVD72?

The SN65HVD72 is a half-duplex transceiver, while the SN65HVD71DGKR is full-duplex. They are not pin-compatible for the same wiring topology; the half-duplex part uses a single pair with direction control, whereas the full-duplex part requires two pairs and no DE/RE pin toggling.

What is the data rate of SN65HVD71DGKR?

The data rate is 400 kbps.

Is SN65HVD71DGKR RoHS compliant?

The part is lead-free and RoHS compliant per TI's standard material declaration for the 8-VSSOP package.

Can SN65HVD71DGKR replace SN65HVD70?

The SN65HVD70 is a half-duplex transceiver; the SN65HVD71DGKR is full-duplex. They are not drop-in replacements — the wiring and control logic differ. For a full-duplex application, the SN65HVD71DGKR is the correct choice.