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SN65HVD1794DR
Public Made by Adomby adom
Texas Instruments RS-485/RS-422 ICs, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSN65HVD1794DR
Texas Instruments · RS-485/RS-422 ICs · SOIC-8
SN65HVD1794DR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | R | output | Receiver output. CMOS logic output driven from the differential bus (A-B) with hysteresis. VOH >= 2.4 V at IOH = -8 mA; VOL <= 0.4 V at IOL = 8 mA. Fail-safe high on open, short, or idle bus (subject to INV state). |
| 2 | INV | input | Cable-invert control input. Logic LOW selects normal polarity; logic HIGH inverts the polarity of the differential bus port to compensate for swapped A/B wiring. Logic-level input with VIH >= 2 V, VIL <= 0.8 V. |
| 3 | DE | input | Driver enable, active high. HIGH enables the differential driver onto the A/B bus; LOW or open places the driver outputs in high-impedance (Z). Logic-level input; internal default is disabled when floating. |
| 4 | D | input | Driver data input. Logic-level input (VIH >= 2 V, VIL <= 0.8 V) driving the differential A/B outputs when DE is asserted. Open defaults to a bus-high output (per driver function table). |
| 5 | GND | power_in | Device ground reference. |
| 6 | A | bidirectional | Non-inverting RS-485 bus I/O. Shared driver output and receiver input pin. Fault-protected to +/-70 V with respect to GND; withstands transient pulses to +/-100 V through 100 ohm; +/-16 kV HBM ESD (IEC 60749-26). Common-mode operating range -20 V to 25 V. |
| 7 | B | bidirectional | Inverting RS-485 bus I/O. Shared driver output and receiver input pin. Fault-protected to +/-70 V with respect to GND; withstands transient pulses to +/-100 V through 100 ohm; +/-16 kV HBM ESD. Common-mode operating range -20 V to 25 V. |
| 8 | VCC | power_in | 5 V supply input. Recommended 4.5 V to 5.5 V (nominal 5 V). Quiescent supply current typ. 4 mA (driver enabled) / 2 mA (driver disabled). Absolute maximum 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Comm/UART |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
SN65HVD1794DRSN65HVD1794DRDSN65HVD1794DRP
CAD (KiCad official)
- Symbol:
SN65HVD1794DR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
sn65hvd1794dr-etched.step/sn65hvd1794dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn65hvd1794dr.step/sn65hvd1794dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (21 pp, sha256
3d6f963aa4cf610a, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).