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SN75172DWR

Public Made by Adom

by adom

Texas Instruments RS-485 / RS-422 ICs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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SN75172DWR

Texas Instruments · RS-485 / RS-422 ICs · SOIC-20-300mil

SN75172DWR from Texas Instruments, in a SOIC-20-300mil. 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 Data input for driver 1; VIH ≥ 2 V, VIL ≤ 0.8 V, VI max 5.5 V.
2 1Y tri_state Non-inverting (positive) differential output of driver 1; VOH min 3.7 V,
3 NC unconnected No internal connection.
4 1Z tri_state Inverting (negative) differential output of driver 1; VOL max 1.1 V, complementary to 1Y, tri-state when disabled.
5 G input Active-high enable input shared by all four drivers; H enables outputs, overridden to hi-Z by G̅ high.
6 2Z tri_state Inverting (negative) differential output of driver 2; VOL max 1.1 V, complementary to 2Y, tri-state when disabled.
7 NC unconnected No internal connection.
8 2Y tri_state Non-inverting (positive) differential output of driver 2; VOH min 3.7 V,
9 2A input Data input for driver 2; VIH ≥ 2 V, VIL ≤ 0.8 V, VI max 5.5 V.
10 GND power_in Ground reference; all voltages referenced to this terminal.
11 3A input Data input for driver 3; VIH ≥ 2 V, VIL ≤ 0.8 V, VI max 5.5 V.
12 3Y tri_state Non-inverting (positive) differential output of driver 3; VOH min 3.7 V,
13 NC unconnected No internal connection.
14 3Z tri_state Inverting (negative) differential output of driver 3; VOL max 1.1 V, complementary to 3Y, tri-state when disabled.
15 ~G input Active-low enable input shared by all four drivers; L enables outputs (with G high), H forces all outputs to high impedance.
16 4Z tri_state Inverting (negative) differential output of driver 4; VOL max 1.1 V, complementary to 4Y, tri-state when disabled.
17 NC unconnected No internal connection.
18 4Y tri_state Non-inverting (positive) differential output of driver 4; VOH min 3.7 V,
19 4A input Data input for driver 4; VIH ≥ 2 V, VIL ≤ 0.8 V, VI max 5.5 V.
20 VCC power_in Supply voltage; recommended 4.75 V to 5.25 V, absolute maximum 7 V; ICC 38-60 mA (outputs enabled).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-20-300mil
Category Interface
Pins 20

CAD (KiCad official)

  • Symbol: SN75172DWR
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: sn75172dwr-etched.step / sn75172dwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn75172dwr.step / sn75172dwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (21 pp, sha256 b11e76d5a75a7caa, retrieved 2026-09-27, 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 0.2, primary claude-sonnet-4-6 (text+vision), consensus claude-opus-4-7 (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