component
SN75ALS191P
Public Made by Adomby adom
Texas Instruments RS-485 / RS-422 ICs, PDIP-8. 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
markdownSN75ALS191P
Texas Instruments · RS-485 / RS-422 ICs · PDIP-8
SN75ALS191P from Texas Instruments, in a PDIP-8. 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 | VCC | power_in | 5 V power supply positive terminal; recommended supply is 4.75 V to 5.25 V (5 V nominal) with an absolute maximum of 7 V. |
| 2 | 1A | input | Single-ended data input for channel 1, TTL and CMOS compatible, with VIH of at least 2 V and VIL of at most 0.8 V. |
| 3 | 2A | input | Single-ended data input for channel 2, TTL and CMOS compatible, with VIH of at least 2 V and VIL of at most 0.8 V. |
| 4 | GND | power_in | Device ground terminal; all voltages are referenced to network ground. |
| 5 | 2Z | output | Inverting differential driver output for channel 2; it is low when input 2A is high and high when 2A is low, per the function table. |
| 6 | 2Y | output | Non-inverting differential driver output for channel 2; it follows input 2A (high when 2A is high, low when 2A is low) per the function table. |
| 7 | 1Z | output | Inverting differential driver output for channel 1; it is low when input 1A is high and high when 1A is low, per the function table. |
| 8 | 1Y | output | Non-inverting differential driver output for channel 1; it follows input 1A (high when 1A is high, low when 1A is low) per the function table. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | PDIP-8 |
| Category | Interface |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
SN75ALS191P - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: PDIP-8 (KiCad packages3D, STEP)
- 3D model files:
sn75als191p-etched.step/sn75als191p-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn75als191p.step/sn75als191p.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (20 pp, sha256
5f3d52313d5ecc3b, retrieved 2026-10-07, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(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).