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SN65HVD1794DR

SN65HVD1794DR RS-485/RS-422 Transceiver, Half-Duplex

MPNSN65HVD1794DR
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Texas Instruments SN65HVD1794DR RS-485/RS-422 transceiver, half-duplex, 115 kbps data rate, 4.5 V to 5.5 V supply, 8-SOIC package, -40°C to 105°C operating temperature.

$2.0850Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN65HVD1794DR specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
ProtocolRS422, RS485
Operating temperature-40°C~105°C
DuplexHalf
PackageTape & Reel (TR)
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 with 50 mV hysteresis

The 50 mV of receiver hysteresis gives the bus some noise margin on long cable runs or in electrically noisy industrial environments.

The 115 kbps maximum data rate places this part in the slow-to-moderate speed tier for RS-485. It is a good fit for fieldbus protocols like Modbus RTU at 9600 or 19200 baud, or for simple sensor polling loops where cable length rather than throughput is the constraint. At this signaling rate the bus can comfortably run several hundred meters without special termination or repeater concerns.

The 105°C upper limit is enough for most engine-bay-adjacent zones but not for direct exhaust or brake-system mounting.

Frequently asked questions

What is the difference between SN65HVD1794DR and SN65HVD1792DR?

The SN65HVD1794DR and SN65HVD1792DR are both half-duplex RS-485 transceivers from the same TI family. The key difference is the data rate: the SN65HVD1794DR is rated for 115 kbps, while the SN65HVD1792DR supports a higher signaling rate. Both operate from a 5 V supply and share the same 8-SOIC footprint.