ULN2004ADR

@@ -0,0 +1,62 @@+# ULN2004ADR++**Texas Instruments** · Darlington Transistor Arrays · SOIC-16++ULN2004ADR 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 | 1B | input | Channel 1 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor; drives 1C output low when asserted. |+| 2 | 2B | input | Channel 2 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor. |+| 3 | 3B | input | Channel 3 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor. |+| 4 | 4B | input | Channel 4 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor. |+| 5 | 5B | input | Channel 5 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor. |+| 6 | 6B | input | Channel 6 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor. |+| 7 | 7B | input | Channel 7 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor. |+| 8 | E | power_in | Common emitter shared by all seven Darlington channels; typically tied to ground. All voltage references in the datasheet are with respect to this terminal. |+| 9 | COM | power_in | Common cathode node for the internal flyback clamp diodes. Must be connected to the load supply (VS) when driving inductive loads to clamp back-EMF; clamp reverse voltage rated 50 V max. |+| 10 | 7C | output | Channel 7 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current, VCE(sat) ≈ 1.1 V at 100 mA. |+| 11 | 6C | output | Channel 6 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current. |+| 12 | 5C | output | Channel 5 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current. |+| 13 | 4C | output | Channel 4 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current. |+| 14 | 3C | output | Channel 3 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current. |+| 15 | 2C | output | Channel 2 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current. |+| 16 | 1C | output | Channel 1 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current, VCE(sat) ≈ 1.1 V at 100 mA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-16 |+| Category | Transistors/Thyristors |+| Pins | 16 |++## Ordering variants++Same part, different packaging or reel option.++- `ULN2004ADR`+- `ULN2004ADRD`+- `ULN2004ADRN`+- `ULN2004ADRNS`+- `ULN2004ADRPW`+- `ULN2004ADRPWR`++## CAD (KiCad official)++- Symbol: `ULN2004ADR`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/uln2004a.pdf) (42 pp, sha256 `0151daa4ffa9135f`, retrieved 2026-08-17, tier: manufacturer)+- **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).++[Datasheet PDF](docs/uln2004adr-datasheet.pdf)

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