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SN75C189AD

Public Made by Adom

by adom

Texas Instruments RS232 ICs, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN75C189AD

Texas Instruments · RS232 ICs · SOIC-14

SN75C189AD from Texas Instruments, in a SOIC-14. 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 1A input Receiver 1 input; accepts RS-232 signals from -25 V to +25 V with on-chip 1 µs noise filter
2 1 CONT input Receiver 1 response-control terminal for input threshold voltage adjustment (±1 mA)
3 1Y output Receiver 1 push-pull output; logic high when input open or shorted to ground
4 2A input Receiver 2 input; accepts RS-232 signals from -25 V to +25 V with on-chip 1 µs noise filter
5 2 CONT input Receiver 2 response-control terminal for input threshold voltage adjustment (±1 mA)
6 2Y output Receiver 2 push-pull output; logic high when input open or shorted to ground
7 GND power_in Ground reference (0 V)
8 3Y output Receiver 3 push-pull output; logic high when input open or shorted to ground
9 3 CONT input Receiver 3 response-control terminal for input threshold voltage adjustment (±1 mA)
10 3A input Receiver 3 input; accepts RS-232 signals from -25 V to +25 V with on-chip 1 µs noise filter
11 4Y output Receiver 4 push-pull output; logic high when input open or shorted to ground
12 4 CONT input Receiver 4 response-control terminal for input threshold voltage adjustment (±1 mA)
13 4A input Receiver 4 input; accepts RS-232 signals from -25 V to +25 V with on-chip 1 µs noise filter
14 VCC power_in Supply voltage; 5 V nominal with 4.5 V to 6 V operating range

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-14
Category Interface
Pins 14

CAD (KiCad official)

  • Symbol: SN75C189AD
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D, STEP)
  • 3D model files: sn75c189ad-etched.step / sn75c189ad-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn75c189ad.step / sn75c189ad.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (24 pp, sha256 4d415b3c312c0209, retrieved 2026-10-05, tier: lcsc)
  • 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