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SN65HVD1785DG4

SN65HVD1785DG4 RS-485 Transceiver, Half-Duplex, 115 Kbps

MPNSN65HVD1785DG4
End of Life

Texas Instruments SN65HVD1785DG4, RS422/RS485 transceiver, half-duplex, 115 Kbps data rate, 4.5 V to 5.5 V supply, 50 mV receiver hysteresis, -40°C to 105°C, 8-SOIC package, tube.

$4.5400Ref. price · indicative, final on quote
Texas Instruments SN65HVD1785DG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN65HVD1785DG4 specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
ProtocolRS422, RS485
Operating temperature-40°C~105°C
DuplexHalf
PackageTube
Data rate115Kbps
Case8-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis50 mV
Number of drivers (Receivers)1/1

Product details

Half-duplex RS-485 transceiver for 5 V industrial buses

The 115 Kbps data rate is the maximum the driver can sustain. For most RS-485 sensor networks, actuator links, and Modbus RTU applications running at 9600 or 19200 baud, this part has headroom. If your design requires 1 Mbps or higher, this transceiver will not meet the timing budget; look at the SN65HVD17xx family for faster rates.

If your system runs on 3.3 V logic, this part needs a level translator or a separate 5 V supply — it is not a 3.3 V device.

For volume planning, the base product number 65HVD1785 covers multiple package and tape/reel variants, so alternate orderable options exist within the same die.

Frequently asked questions

Is SN65HVD1785DG4 a drop-in replacement for SN65HVD1785D?

Yes, the SN65HVD1785DG4 is a direct drop-in replacement for the SN65HVD1785D. Both share the same 8-SOIC footprint, pinout, and electrical specifications. The 'G4' suffix indicates RoHS-compliant green packaging, while the older 'D' suffix may be non-green. No board layout or BOM changes are required to swap them.

Can SN65HVD1785DG4 be used with a 5V Arduino?

Yes. Connect the driver and receiver enable pins to digital outputs for half-duplex control. The 115 Kbps data rate is sufficient for typical UART communication at 9600 or 115200 baud.