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docs 223b-tdsemic: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
223b-tdsemic-etched.fit.json 223b-tdsemic: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
223b-tdsemic-etched.glb 223b-tdsemic: one-pass backfill (re-etched) · Ray
223b-tdsemic-etched.step 223b-tdsemic: one-pass backfill (re-etched) · Ray
223b-tdsemic-hero.glb 223b-tdsemic: hero from the plain model · Ray
223b-tdsemic-hero.overlay.json 223b-tdsemic: hero from the plain model · Ray
223b-tdsemic.glb Publish 0.1.0 · Ray
223b-tdsemic.kicad_mod Publish 0.1.0 · Ray
223b-tdsemic.kicad_sym Publish 0.1.0 · Ray
223b-tdsemic.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
223b-tdsemic.step Publish 0.1.0 · Ray
package.json Publish 0.2.2 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json Publish 0.2.2 · Ray
README.md 223b-tdsemic: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

223B TDSEMIC

TDSEMIC · Touch Sensors · SOT-23-6

223B TDSEMIC from TDSEMIC, in a SOT-23-6. 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 OUT output Push-pull touch-detection output. Sources up to ~6 mA and sinks up to ~10 mA; output polarity and behavior (momentary vs latched) set by SLH and STG. Response time ~60 ms.
2 GND power_in Ground / VSS reference (0 V).
3 SO input Touch sense input. Connect to the touch pad; sensitivity is set by a 0-50 pF cap (C1) to ground, with an optional 100-1000 Ω series resistor (Rs) for EMI robustness. Sensor frequency ~500 kHz at VDD=3.0 V, no load.
4 SLH input Output active-level select (must NOT be left floating). Tie to GND: touch outputs high, idle low. Tie to VDD: touch outputs low, idle high. Output swing equals VDD.
5 VDD power_in Positive supply, 2.0-5.5 V (typ 3.0 V). Typical operating current 2.5 uA (max 7 uA) at VDD=3.0 V; decouple with 100 nF + 10 uF near the pin.
6 STG input Mode select (must NOT be left floating). Tie to GND: synchronous-output mode (momentary, output tracks touch, max touch time 6 s). Tie to VDD: level-toggle mode (self-lock; each touch inverts output, max touch time 6 s).

Key specifications

Parameter Value
Manufacturer TDSEMIC
Package SOT-23-6
Category Sensor
Pins 6

CAD (KiCad official)

  • Symbol: 223B TDSEMIC
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: 223b-tdsemic-etched.step / 223b-tdsemic-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 223b-tdsemic.step / 223b-tdsemic.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
223b-tdsemic.step 97 KB You want the bare part, or you mark your own boards.
223b-tdsemic-etched.step 2.1 MB You want the part with 223B TDSEMIC already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 525 faces against 117 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: TDSEMIC datasheet (6 pp, sha256 1329d729fa77cadd, retrieved 2026-08-17, tier: lcsc)
  • 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