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Texas Instruments SN65HVD74DGK — Interface & Transceivers

SN65HVD74DGK RS-422/RS-485 Transceiver, 20 Mbps, Full Duplex

MPNSN65HVD74DGK
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Texas Instruments SN65HVD74DGK, RS422/RS485 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 20Mbps, 3V~3.6V, -40°C~125°C, Surface Mount, 8-VSSOP.

$5.8500Ref. price · indicative, final on quote
Texas Instruments SN65HVD74DGK datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN65HVD74DGK specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage3V ~ 3.6V
ProtocolRS422, RS485
Operating temperature-40°C~125°C
DuplexFull
PackageTube
Data rate20Mbps
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Receiver hysteresis70 mV
Number of drivers (Receivers)1/1

Product details

20 Mbps full-duplex RS-485 transceiver for industrial buses

The Texas Instruments SN65HVD74DGK is a full-duplex RS-422/RS-485 transceiver delivering 20 Mbps data rate over a single differential pair, with one driver and one receiver in an 8-VSSOP package. The 70 mV receiver hysteresis provides built-in noise margin on long cable runs, reducing the need for external filtering in electrically noisy factory-floor or motor-drive environments.

For BOM planning, this removes the urgency to qualify a drop-in replacement or stockpile for a looming phase-out.

Package and footprint — 8-VSSOP for space-constrained boards

Frequently asked questions

Can the SN65HVD74DGK be used as a replacement for the SN65HVD72DGK?

Both parts are full-duplex RS-485 transceivers in the same 8-VSSOP package and share the same supply range and temperature grade. The SN65HVD74DGK supports 20 Mbps data rate, while the SN65HVD72DGK is a lower-speed variant. If your bus runs at 20 Mbps or below, the SN65HVD74DGK is a direct pin-compatible swap with higher speed margin.