SN65HVD12DR from Texas Instruments, in a SOP-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. CMOS-level output reflecting the state of the RS-485 differential bus (A-B). Sourced up to
2	RE	input	Active-low receiver enable. Drive low to enable receiver output R; drive high to place R in high-impedance (used to enter low-power standby together with DE=0).
3	DE	input	Active-high driver enable. Drive high to enable the differential driver onto A/B; drive low to place A/B in high-impedance.
4	D	input	Driver data input. CMOS logic input whose state is transmitted differentially on A/B when DE is high. VIH ≥ 2 V, VIL ≤ 0.8 V.
5	GND	power_in	Local device ground / reference potential.
6	A	bidirectional	RS-485 differential bus I/O, non-inverting side. Driver output or receiver input, complementary to B. Rated -7 V to 12 V continuous, ±16-kV HBM ESD.
7	B	bidirectional	RS-485 differential bus I/O, inverting side. Driver output or receiver input, complementary to A. Rated -7 V to 12 V continuous, ±16-kV HBM ESD.
8	VCC	power_in	Supply voltage, 3 V to 3.6 V nominal. ICC ≈ 9 mA active, ≈ 1 μA standby (RE high, DE low).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SN65HVD12DRD
SN65HVD12DR
SN65HVD12DRP

CAD (KiCad official)

Symbol: SN65HVD12DR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (37 pp, sha256 c180625a50ecb754, 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).

Datasheet PDF