Skip to main content
Log in
SN65HVD1786DG4

SN65HVD1786DG4 RS-485/RS-422 Transceiver, 1 Mbps, 8-SOIC

MPNSN65HVD1786DG4
Active

Texas Instruments SN65HVD1786DG4, RS-422/RS-485 Transceiver, Half-Duplex, 1 Driver/1 Receiver, 8-SOIC Package, 4.5 V to 5.5 V Supply, -40 °C to 105 °C.

$5.4400Ref. price · indicative, final on quote
Texas Instruments SN65HVD1786DG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN65HVD1786DG4 specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
ProtocolRS422, RS485
Operating temperature-40°C~105°C
DuplexHalf
PackageBulk
Data rate1Mbps
Case8-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis50 mV
Number of drivers (Receivers)1/1

Product details

RS-485 transceiver for industrial bus lines

At 1 Mbps this transceiver covers the common industrial fieldbus speeds — Profibus DP at 12 Mbps is faster, but for Modbus RTU, BACnet MS/TP, or simple sensor polling loops at 115.2 kbps to 1 Mbps it is right in the sweet spot. The 5 V nominal supply is a hard constraint: if your microcontroller or UART runs at 3.3 V, you will need level translation on the logic-side pins (RO, DI, RE, DE). The part itself is not 3.3 V tolerant on the supply.

Package and rework — 8-SOIC with standard pitch

No thermal pad or exposed paddle to worry about — just standard 0.050-inch pitch land pattern.

Frequently asked questions

What is the difference between SN65HVD1786DG4 and SN65HVD1786D?

The suffix difference (DG4 vs D) typically indicates a packaging or environmental compliance variant. Both share the same base RS-485/RS-422 transceiver function, 1/1 driver/receiver count, half-duplex protocol, and 8-SOIC package. The DG4 suffix often denotes lead-free / RoHS-compliant plating. For a pin-compatible second source within the same family, the SN65HVD1786D is the closest drop-in alternative, but verify the specific compliance marking for your assembly house's requirements.

Is SN65HVD1786DG4 compatible with 3.3V logic?

The logic-side pins (RO, DI, RE, DE) are referenced to that supply rail, so they are not 3.3 V tolerant. You will need a level translator or a 5 V-tolerant UART on the microcontroller side to interface directly.

What is the maximum data rate of SN65HVD1786DG4?

The SN65HVD1786DG4 supports data rates up to 1 Mbps. This covers common industrial protocols like Modbus RTU at 115.2 kbps or 1 Mbps, but does not reach the 12 Mbps of Profibus DP.