component
SN75C189AD
Public Made by Adomby adom
Texas Instruments RS232 ICs, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSN75C189AD
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn75c189ad.step/sn75c189ad.glbare 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).