component
ISO7231CDWR
Public Made by Adomby adom
Texas Instruments Digital Isolators, SOIC-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownISO7231CDWR
Texas Instruments · Digital Isolators · SOIC-16
ISO7231CDWR from Texas Instruments, in a SOIC-16. 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 | Supply voltage for input-side circuits; operate at 3.15 V to 5.5 V with 0.1 µF bypass capacitor to GND1 |
| 2 | GND1 | power_in | Ground reference for VCC1 input-side supply |
| 3 | INA | input | TTL/CMOS digital input channel A with VIH ≥ 0.7 VCC, VIL ≤ 0.3 VCC, 150 mV hysteresis, isolated via capacitive barrier |
| 4 | INB | input | TTL/CMOS digital input channel B with VIH ≥ 0.7 VCC, VIL ≤ 0.3 VCC, 150 mV hysteresis, isolated via capacitive barrier |
| 5 | OUTC | tri_state | Digital output channel C tri-state controlled by EN1; VOH ≥ VCCO - 0.8 V at -4 mA, VOL ≤ 0.4 V at 4 mA, isolated via capacitive barrier |
| 6 | NC | unconnected | Not connected; leave open |
| 7 | EN1 | input | Enable control input for channel C output; high = output enabled, low = output in high-impedance state |
| 8 | GND1 | power_in | Ground reference for VCC1 input-side supply |
| 9 | GND2 | power_in | Ground reference for VCC2 output-side supply |
| 10 | EN2 | input | Enable control input for channels A and B outputs; high = outputs enabled, low = outputs in high-impedance state |
| 11 | NC | unconnected | Not connected; leave open |
| 12 | INC | input | TTL/CMOS digital input channel C with VIH ≥ 0.7 VCC, VIL ≤ 0.3 VCC, 150 mV hysteresis, isolated via capacitive barrier |
| 13 | OUTB | tri_state | Digital output channel B tri-state controlled by EN2; VOH ≥ VCCO - 0.8 V at -4 mA, VOL ≤ 0.4 V at 4 mA, isolated via capacitive barrier |
| 14 | OUTA | tri_state | Digital output channel A tri-state controlled by EN2; VOH ≥ VCCO - 0.8 V at -4 mA, VOL ≤ 0.4 V at 4 mA, isolated via capacitive barrier |
| 15 | GND2 | power_in | Ground reference for VCC2 output-side supply |
| 16 | VCC2 | power_in | Supply voltage for output-side circuits; operate at 3.15 V to 5.5 V with 0.1 µF bypass capacitor to GND2 |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISO7231CDWR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
iso7231cdwr-etched.step/iso7231cdwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7231cdwr.step/iso7231cdwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (34 pp, sha256
c2e95ccba476b8a9, retrieved 2026-09-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).