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SN65HVD1786D

SN65HVD1786D RS-485/RS-422 Transceiver, 1 Mbps, 8-SOIC

MPNSN65HVD1786D
Active

Texas Instruments SN65HVD1786D, RS-422/RS-485 half-duplex transceiver, 1 Mbps data rate, 4.5V to 5.5V supply, 50 mV receiver hysteresis, -40°C to 105°C, 8-SOIC surface mount, Tube.

$5.4400Ref. price · indicative, final on quote
Texas Instruments SN65HVD1786D datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN65HVD1786D specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
ProtocolRS422, RS485
Operating temperature-40°C~105°C
DuplexHalf
PackageTube
Data rate1Mbps
Case8-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis50 mV
Number of drivers (Receivers)1/1

Product details

It integrates one driver and one receiver on a single 5V supply rail (4.5V to 5.5V), making it a straight drop for industrial bus nodes — PLC I/O modules, motor drive feedback links, and building automation fieldbus ports. The 50 mV of receiver hysteresis helps reject noise on long twisted-pair runs, a practical edge when the cable leaves the cabinet and runs past VFDs or contactors.

If your UART or controller is 3.3V logic, you need level translation on the driver input and receiver output — the SN65HVD1786D does not include internal logic-level shifting. For a 5V-tolerant MCU or a 5V-only backplane, it connects directly.

The 8-SOIC package is standard for point-to-point or multi-drop bus nodes on a two-layer PCB.

TI lists the SN65HVD1786D as Active.

Frequently asked questions

What is the difference between SN65HVD1786D and SN65HVD1785?

Both are half-duplex RS-485/RS-422 transceivers in 8-SOIC with the same pinout and 1 Mbps data rate. The difference lies in the receiver hysteresis: the SN65HVD1786D specifies 50 mV of hysteresis, while the SN65HVD1785 typically has less (often 30 mV). For noisy industrial bus runs, the extra hysteresis on the '1786D improves noise margin.

Is SN65HVD1786D compatible with 3.3V logic?

No. Direct connection to a 3.3V UART will violate input threshold levels; use a level shifter or a 3.3V-compatible transceiver variant for mixed-voltage designs.