component
ISO1540DR
Public Unreviewedby Ray
Texas Instruments I2C Isolators, SOIC-8. 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
markdownISO1540DR
Texas Instruments · I2C Isolators · SOIC-8
ISO1540DR from Texas Instruments, in a SOIC-8. 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, side 1; recommended operating range 3 to 5.5 V. |
| 2 | SDA1 | bidirectional | Bidirectional serial data line, side 1, open-drain with 3.5 mA sink current capability and 40 pF maximum load. |
| 3 | SCL1 | bidirectional | Bidirectional serial clock line, side 1, open-drain with 3.5 mA sink current capability and 40 pF maximum load. |
| 4 | GND1 | power_in | Ground reference, side 1. |
| 5 | GND2 | power_in | Ground reference, side 2. |
| 6 | SCL2 | bidirectional | Bidirectional serial clock line, side 2, open-drain with 35 mA sink current capability and 400 pF maximum load. |
| 7 | SDA2 | bidirectional | Bidirectional serial data line, side 2, open-drain with 35 mA sink current capability and 400 pF maximum load. |
| 8 | VCC2 | power_in | Supply voltage, side 2; recommended operating range 3 to 5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Signal Isolation Devices |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
ISO1540DR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (36 pp, sha256
a073ca9bd456eda1, retrieved 2026-09-17, tier: manufacturer) - 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).