component
SN65HVD20DR
Public Unreviewedby Ray
Texas Instruments RS-485 / RS-422 ICs, SOIC-8. Datasheet-verified pinout, 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
markdownSN65HVD20DR
Texas Instruments · RS-485 / RS-422 ICs · SOIC-8
SN65HVD20DR 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 | Receive data output. Digital CMOS output that reflects the state of the differential receiver comparing bus lines A and B. |
| 2 | RE | input | Receiver enable, active low. Drive low to enable the receiver output R; drive high to place R in a high-impedance state. |
| 3 | DE | input | Driver enable, active high. Drive high to enable the differential driver outputs A and B; drive low to place the driver in a high-impedance state. |
| 4 | D | input | Driver data input. Digital CMOS input; the logic level here determines the differential state driven on the A/B bus when DE is high. |
| 5 | GND | power_in | Local device ground / reference potential. |
| 6 | A | bidirectional | RS-485 differential bus line A (non-inverting). Driver output or receiver input, complementary to B. Extended common-mode range -20 V to 25 V. |
| 7 | B | bidirectional | RS-485 differential bus line B (inverting). Driver output or receiver input, complementary to A. Extended common-mode range -20 V to 25 V. |
| 8 | VCC | power_in | Supply voltage input, 4.5 V to 5.5 V. Bypass locally with a 100 nF ceramic capacitor to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Interface |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
SN65HVD20DRSN65HVD20DRDSN65HVD20DRP
CAD (KiCad official)
- Symbol:
SN65HVD20DR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (37 pp, sha256
7a91efb110506aa4, 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).