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ISO7742FQDWQ1

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Texas Instruments Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ISO7742FQDWQ1

Texas Instruments · Digital Isolators · SOIC-16

ISO7742FQDWQ1 from Texas Instruments, in a SOIC-16. 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 VCC1 power_in Side-1 supply voltage, recommended range 2.25 V to 5.5 V, decoupled with a 0.1 µF capacitor to GND1 placed no more than 2 mm from the pin.
2 GND1 power_in Side-1 ground connection for VCC1 (pins 2 and 8 are both side-1 ground).
3 INA input Logic input, channel A on side 1; VIH is 0.7 x VCCI minimum and VIL is 0.3 x VCCI maximum.
4 INB input Logic input, channel B on side 1; VIH is 0.7 x VCCI minimum and VIL is 0.3 x VCCI maximum.
5 OUTC output Output of channel C; follows the logic state of its input and goes high impedance when the enable pin is low.
6 OUTD output Output of channel D; follows the logic state of its input and goes high impedance when the enable pin is low.
7 EN1 input Output enable for side 1; side-1 outputs are enabled when EN1 is high or open and go to high impedance when EN1 is low.
8 GND1 power_in Side-1 ground connection for VCC1 (second side-1 ground pin, with pin 2).
9 GND2 power_in Side-2 ground connection for VCC2 (pins 9 and 15 are both side-2 ground).
10 EN2 input Output enable for side 2; side-2 outputs are enabled when EN2 is high or open and go to high impedance when EN2 is low.
11 IND input Logic input, channel D on side 2; VIH is 0.7 x VCCI minimum and VIL is 0.3 x VCCI maximum.
12 INC input Logic input, channel C on side 2; VIH is 0.7 x VCCI minimum and VIL is 0.3 x VCCI maximum.
13 OUTB output Output of channel B; follows the logic state of its input and goes high impedance when the enable pin is low.
14 OUTA output Output of channel A; follows the logic state of its input and goes high impedance when the enable pin is low.
15 GND2 power_in Side-2 ground connection for VCC2 (second side-2 ground pin, with pin 9).
16 VCC2 power_in Side-2 supply voltage, recommended range 2.25 V to 5.5 V, decoupled with a 0.1 µF capacitor to GND2 placed no more than 2 mm from the pin.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-16
Category Signal Isolation Devices
Pins 16

CAD (KiCad official)

  • Symbol: ISO7742FQDWQ1
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOIC-16 (KiCad packages3D, STEP)
  • 3D model files: iso7742fqdwq1-etched.step / iso7742fqdwq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); iso7742fqdwq1.step / iso7742fqdwq1.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (55 pp, sha256 3fc23e4a8eb8bc39, retrieved 2026-10-08, 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