component
ISO7231MDWR
Public Unreviewedby Ray
Texas Instruments Digital Isolators, SOIC-16-300mil. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
PCB Footprint
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
Datasheet
Open in new tab ↗Loads on click. Unloads when scrolled away or the tab is hidden.
README
markdownISO7231MDWR
Texas Instruments · Digital Isolators · SOIC-16-300mil
ISO7231MDWR from Texas Instruments, in a SOIC-16-300mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VCC1 | power_in | Side-1 supply. 3.15 V to 5.5 V (3.0-3.6 V for 3.3 V operation, 4.5-5.5 V for 5 V). Absolute max 6 V. Bypass locally to GND1. |
| 2 | GND1 | power_in | Side-1 ground return for VCC1. Tied together with pin 8 externally. |
| 3 | INA | input | Logic input, channel A (side-1 to side-2 forward direction). CMOS VCC/2 threshold on the ISO7231M variant; VIH ≥ 0.7·VCC, VIL ≤ 0.3·VCC. |
| 4 | INB | input | Logic input, channel B (side-1 to side-2 forward direction). Same CMOS thresholds as INA. |
| 5 | OUTC | output | Logic output, channel C (side-2 to side-1 reverse direction). Push-pull CMOS, IOH/IOL ≤ 4 mA. Referenced to VCC1 / GND1. |
| 6 | NC | unconnected | No internal connection. May be left floating or tied to GND1. |
| 7 | EN1 | input | Output enable for channel C (the side-1 reverse-direction output OUTC). High = enabled/active output; low = high-impedance output. CMOS input, referenced to VCC1/GND1. |
| 8 | GND1 | power_in | Side-1 ground. Second GND1 pin; connect together with pin 2. |
| 9 | GND2 | power_in | Side-2 ground return for VCC2. Tie together with pin 15 externally. |
| 10 | EN2 | input | Output enable for channels A and B (the side-2 forward-direction outputs OUTA / OUTB). High = enabled; low = high-impedance. CMOS input, referenced to VCC2/GND2. |
| 11 | NC | unconnected | No internal connection. May be left floating or tied to GND2. |
| 12 | INC | input | Logic input, channel C (side-2 to side-1 reverse direction). CMOS VCC/2 threshold; referenced to VCC2/GND2. |
| 13 | OUTB | output | Logic output, channel B (side-1 to side-2 forward direction). Push-pull CMOS, IOH/IOL ≤ 4 mA. Referenced to VCC2/GND2. |
| 14 | OUTA | output | Logic output, channel A (side-1 to side-2 forward direction). Push-pull CMOS, IOH/IOL ≤ 4 mA. Referenced to VCC2/GND2. |
| 15 | GND2 | power_in | Side-2 ground. Second GND2 pin; connect together with pin 9. |
| 16 | VCC2 | power_in | Side-2 supply. 3.15 V to 5.5 V (independent of VCC1 for level translation). Absolute max 6 V. Bypass locally to GND2. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
Ordering variants
Same part, different packaging or reel option.
ISO7231MDWRISO7231MDWR.AISO7231MDWRG4
CAD (KiCad official)
- Symbol:
ISO7231MDWR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (None pp, sha256
575142dc6c71e219, retrieved 2026-08-17, 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:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).