component
ISO1541QDRQ1
Public Made by Adomby adom
Texas Instruments I2C Isolators, SOIC-8. Pinout cross-checked by two models against the datasheet, 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
markdownISO1541QDRQ1
Texas Instruments · I2C Isolators · SOIC-8
ISO1541QDRQ1 from Texas Instruments, in a SOIC-8. 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 operating range is 3 V to 5.5 V (section 6.3). |
| 2 | SDA1 | bidirectional | Side 1 serial data input/output; side 1 high-level input is 0.7 × VCC1 minimum, and the side 1 output sink current is 0.5 mA to 3.5 mA with up to 40 pF load. |
| 3 | SCL1 | input | Side 1 serial clock input only on ISO1541-Q1; side 1 low-level input is 0.5 V maximum and high-level input is 0.7 × VCC1 minimum. |
| 4 | GND1 | power_in | Ground for side 1; all side 1 voltages are referenced to this pin. |
| 5 | GND2 | power_in | Ground for side 2; all side 2 voltages are referenced to this pin. |
| 6 | SCL2 | output | Side 2 serial clock output on ISO1541-Q1; open-drain output with sink current of 0.5 mA to 35 mA and bus capacitance up to 400 pF. |
| 7 | SDA2 | bidirectional | Side 2 serial data input/output; side 2 high-level input is 0.7 × VCC2 minimum, and the side 2 output sink current is 0.5 mA to 35 mA with up to 400 pF load. |
| 8 | VCC2 | power_in | Side 2 supply voltage; recommended operating range is 3 V to 5.5 V (section 6.3). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Signal Isolation Devices |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
ISO1541QDRQ1 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
iso1541qdrq1-etched.step/iso1541qdrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso1541qdrq1.step/iso1541qdrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
85166d2cd711568c, retrieved 2026-10-10, 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-5-5(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).