Texas Instruments SN65HVD1794D, Half-Duplex RS-422/RS-485 Transceiver, 115 kbps Data Rate, 4.5V–5.5V Supply, 8-SOIC Package, -40°C to 105°C.
| 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 | Tube |
| Data rate | 115Kbps |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Receiver hysteresis | 50 mV |
| Number of drivers (Receivers) | 1/1 |
The 50 mV of receiver hysteresis helps reject noise on long or electrically noisy bus runs — a practical margin for factory-floor or outdoor telecom links.
The supply tolerance also handles a lightly regulated 5 V rail from a downstream LDO.
The SN65HVD1794D is the standard SOIC-8 packaged variant of the base part number 65HVD1794. The suffix 'D' indicates the 8-SOIC package; other suffixes (e.g., 'DGK' for VSSOP) denote different package options. Functionally they are identical transceivers.
The SN65HVD1794D supports a maximum data rate of 115 kbps, suitable for RS-422 and RS-485 applications at moderate bus speeds.