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SN75ALS191P

Public Made by Adom

by adom

Texas Instruments RS-485 / RS-422 ICs, PDIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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README.md Initial commit: component/sn75als191p · Ray 2d ago
sn75als191p-etched.glb sn75als191p: factory component page (tier=lcsc) · Ray 2d ago
sn75als191p-etched.step sn75als191p: factory component page (tier=lcsc) · Ray 2d ago
sn75als191p-hero.glb sn75als191p: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
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SN75ALS191P

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn75als191p.step / sn75als191p.glb are 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, primary claude-haiku-5-5 (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