Texas Instruments SN65HVD1785DRG4 half-duplex RS-485/RS-422 transceiver, 115 kbps data rate, 4.5V~5.5V supply, 50 mV receiver hysteresis, -40°C~105°C, 8-SOIC package.
| Parameter | Value |
|---|---|
| Type | Transceiver |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Protocol | RS422, RS485 |
| Operating temperature | -40°C~105°C |
| Duplex | Half |
| Package | Tape & Reel (TR) |
| Data rate | 115Kbps |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Receiver hysteresis | 50 mV |
| Number of drivers (Receivers) | 1/1 |
The receiver includes 50 mV of hysteresis, which helps reject noise picked up on long twisted-pair runs common in factory-floor RS-485 links. At 115 kbps the bus can span several hundred meters without repeaters, provided termination is matched to the cable impedance.
The SN65HVD1785DRG4 and SN65HVD1785D share the same base product number 65HVD1785 and the same electrical specifications — half-duplex RS-485 transceiver, 115 kbps, 5 V supply, 8-SOIC package. The only difference is the packaging code: the DRG4 suffix denotes Tape & Reel (TR) packaging, while the D suffix typically indicates tube or alternate reel quantity. They are electrically identical and can be used interchangeably in a design as long as the packaging format suits your assembly line.