component
ISO7731FDBQR
Public Made by Adomby adom
Texas Instruments Digital Isolators, SSOP-16-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownISO7731FDBQR
Texas Instruments · Digital Isolators · SSOP-16-150mil
ISO7731FDBQR from Texas Instruments, in a SSOP-16-150mil. 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 | Input-side power supply, operating range 2.25V to 5.5V. |
| 2 | GND1 | power_in | Input-side ground reference for VCC1. |
| 3 | INA | input | Channel A digital input; high threshold VIH=0.7×VCCI, low threshold VIL=0 to 0.3×VCCI. |
| 4 | INB | input | Channel B digital input; high threshold VIH=0.7×VCCI, low threshold VIL=0 to 0.3×VCCI. |
| 5 | OUTC | tri_state | Channel C digital output; VOL=0.2V typ, VOH=VCCO-0.4V typ when enabled; high-impedance tri-state when EN1 is low. |
| 6 | NC | unconnected | No connection. |
| 7 | EN1 | input | Output enable 1; enables OUTC when high or open-circuit, tri-state when low. |
| 8 | GND1 | power_in | Input-side ground reference for VCC1. |
| 9 | GND2 | power_in | Output-side ground reference for VCC2. |
| 10 | EN2 | input | Output enable 2; enables OUTA and OUTB when high or open-circuit, tri-state when low. |
| 11 | NC | unconnected | No connection. |
| 12 | INC | input | Channel C digital input; high threshold VIH=0.7×VCCO, low threshold VIL=0 to 0.3×VCCO. |
| 13 | OUTB | tri_state | Channel B digital output; VOL=0.2V typ, VOH=VCCO-0.4V typ when enabled; high-impedance tri-state when EN2 is low. |
| 14 | OUTA | tri_state | Channel A digital output; VOL=0.2V typ, VOH=VCCO-0.4V typ when enabled; high-impedance tri-state when EN2 is low. |
| 15 | GND2 | power_in | Output-side ground reference for VCC2. |
| 16 | VCC2 | power_in | Output-side power supply, operating range 2.25V to 5.5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-150mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISO7731FDBQR - Footprint:
Package_SO:SSOP-16_5.3x6.2mm_P0.65mm - 3D model: SSOP-16-150mil (KiCad packages3D, STEP)
- 3D model files:
iso7731fdbqr-etched.step/iso7731fdbqr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7731fdbqr.step/iso7731fdbqr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (49 pp, sha256
6d47a7b1277198b2, retrieved 2026-10-03, 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-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).