component
ISO7521CDWR
Public Made by Adomby adom
Texas Instruments Digital Isolators, SOIC-16-300mil. 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
markdownISO7521CDWR
Texas Instruments · Digital Isolators · SOIC-16-300mil
ISO7521CDWR from Texas Instruments, in a SOIC-16-300mil. 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 | GND1 | power_in | Ground connection for input-side supply voltage VCC1. |
| 2 | NC | unconnected | No internal connection. |
| 3 | VCC1 | power_in | Power supply input for input-side channels, operating voltage 3.15 V to 5.25 V. |
| 4 | OUTA | output | TTL output for channel A with propagation delay 10 to 17 ns. |
| 5 | INB | input | TTL input for channel B accepting logic levels VIL 0 V to 0.8 V and VIH 2 V to 5.25 V. |
| 6 | NC | unconnected | No internal connection. |
| 7 | GND1 | power_in | Ground connection for input-side supply voltage VCC1. |
| 8 | NC | unconnected | No internal connection. |
| 9 | GND2 | power_in | Ground connection for output-side supply voltage VCC2. |
| 10 | NC | unconnected | No internal connection. |
| 11 | NC | unconnected | No internal connection. |
| 12 | OUTB | output | TTL output for channel B with propagation delay 10 to 17 ns. |
| 13 | INA | input | TTL input for channel A accepting logic levels VIL 0 V to 0.8 V and VIH 2 V to 5.25 V. |
| 14 | VCC2 | power_in | Power supply input for output-side channels, operating voltage 3.15 V to 5.25 V. |
| 15 | NC | unconnected | No internal connection. |
| 16 | GND2 | power_in | Ground connection for output-side supply voltage VCC2. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Signal Isolation Devices |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ISO7521CDWR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
iso7521cdwr-etched.step/iso7521cdwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);iso7521cdwr.step/iso7521cdwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (28 pp, sha256
191c67c8702531ea, retrieved 2026-09-26, 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).