component

SN65HVD21DR

Public Made by Adom

by adom

Texas Instruments RS-485 / RS-422 ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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package.json sn65hvd21dr: LCSC part number C2870622 (was published as the bare integer) · Ray 8h ago
page.json sn65hvd21dr: LCSC part number C2870622 (was published as the bare integer) · Ray 8h ago
README.md Initial commit: component/sn65hvd21dr · Ray 23h ago
sn65hvd21dr-etched.glb sn65hvd21dr: factory component page (tier=mfr) · Ray 23h ago
sn65hvd21dr-etched.step sn65hvd21dr: factory component page (tier=mfr) · Ray 23h ago
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SN65HVD21DR

Texas Instruments · RS-485 / RS-422 ICs · SOIC-8

SN65HVD21DR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 R output Receive data output, active high
2 RE input Receiver enable, active low; enables differential receiver when low
3 DE input Driver enable, active high; enables differential driver when high
4 D input Driver data input for digital data transmission onto RS-485 bus
5 GND power_in Local device ground reference potential
6 A bidirectional Differential bus A output/input, driver output or receiver input complementary to B, voltage range -20 V to 25 V
7 B bidirectional Differential bus B output/input, driver output or receiver input complementary to A, voltage range -20 V to 25 V
8 VCC power_in Supply voltage, 4.5-V to 5.5-V nominal

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Interface
Pins 8

CAD (KiCad official)

  • Symbol: SN65HVD21DR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: sn65hvd21dr-etched.step / sn65hvd21dr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn65hvd21dr.step / sn65hvd21dr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 7a91efb110506aa4, retrieved 2026-10-06, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF