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ST26C32ABDR

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by Ray

STMicroelectronics RS-485 / RS-422 ICs, SOIC-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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PCB Footprint

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Datasheet

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Contents

README

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ST26C32ABDR

STMicroelectronics · RS-485 / RS-422 ICs · SOIC-16

ST26C32ABDR from STMicroelectronics, in a SOIC-16. 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 AIN1 input Channel A non-inverting differential input (Input A1). Receiver A compares AIN1 vs AIN2; output goes high when VID = V(AIN1) - V(AIN2) >= VTH(MAX). Common-mode range ±7 V.
2 AIN2 input Channel A inverting differential input (Input A2). Complement of AIN1 for the channel-A RS-422/RS-423 receiver.
3 AOUT tri_state Channel A 3-state single-ended output. Drives ±6 mA source/sink; enters high-Z when the EN/EN̄ enable combination disables the outputs.
4 EN input Active-high enable input. Combined with pin 12 (EN̄) to gate all four receiver outputs; when EN=L and EN̄=H the outputs are placed in the high-impedance (Z) state.
5 BOUT tri_state Channel B 3-state single-ended output. Drives ±6 mA source/sink; enters high-Z when the enable combination disables the outputs.
6 BIN2 input Channel B inverting differential input (Input B2).
7 BIN1 input Channel B non-inverting differential input (Input B1). Receiver B compares BIN1 vs BIN2.
8 GND power_in Ground reference (0 V) for the device.
9 CIN1 input Channel C non-inverting differential input (Input C1). Receiver C compares CIN1 vs CIN2.
10 CIN2 input Channel C inverting differential input (Input C2).
11 COUT tri_state Channel C 3-state single-ended output. Drives ±6 mA source/sink; enters high-Z when the enable combination disables the outputs.
12 EN# input Active-low enable input (EN̄, shown with an overbar in the datasheet). Combined with pin 4 (EN) to gate all four receiver outputs; when EN=L and EN̄=H the outputs are placed in the high-impedance (Z) state.
13 DOUT tri_state Channel D 3-state single-ended output. Drives ±6 mA source/sink; enters high-Z when the enable combination disables the outputs.
14 DIN2 input Channel D inverting differential input (Input D2).
15 DIN1 input Channel D non-inverting differential input (Input D1). Receiver D compares DIN1 vs DIN2.
16 VCC power_in Positive supply voltage. Recommended operating range 4.5 V to 5.5 V; absolute maximum 7 V.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOIC-16
Category Interface
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • ST26C32ABDR
  • ST26C32ABDRN
  • ST26C32ABDRTR

CAD (KiCad official)

  • Symbol: ST26C32ABDR
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
st26c32abdr.step 217 KB You want the bare part, or you mark your own boards.
st26c32abdr-etched.step 3.0 MB You want the part with ST26C32ABDR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 720 faces against 267 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (14 pp, sha256 443594fac1d287d4, 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