74HC02D

@@ -0,0 +1,56 @@+# 74HC02D++**Nexperia** · Gates · SOIC-14++74HC02D from Nexperia, in a SOIC-14. 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 | 1Y | output | Data output of gate 1 (NOR of 1A and 1B). CMOS push-pull output, can drive IO up to -5.2 mA (source) / 5.2 mA (sink) at VCC = 6.0 V. |+| 2 | 1A | input | Data input A of gate 1. CMOS logic input with clamp diodes; input voltage 0 to VCC recommended, VIH >= 3.15 V at VCC = 4.5 V (74HC02). |+| 3 | 1B | input | Data input B of gate 1. CMOS logic input with clamp diodes; input voltage 0 to VCC recommended. |+| 4 | 2Y | output | Data output of gate 2 (NOR of 2A and 2B). CMOS push-pull output. |+| 5 | 2A | input | Data input A of gate 2. CMOS logic input with clamp diodes. |+| 6 | 2B | input | Data input B of gate 2. CMOS logic input with clamp diodes. |+| 7 | GND | power_in | Ground reference (0 V). |+| 8 | 3A | input | Data input A of gate 3. CMOS logic input with clamp diodes. |+| 9 | 3B | input | Data input B of gate 3. CMOS logic input with clamp diodes. |+| 10 | 3Y | output | Data output of gate 3 (NOR of 3A and 3B). CMOS push-pull output. |+| 11 | 4A | input | Data input A of gate 4. CMOS logic input with clamp diodes. |+| 12 | 4B | input | Data input B of gate 4. CMOS logic input with clamp diodes. |+| 13 | 4Y | output | Data output of gate 4 (NOR of 4A and 4B). CMOS push-pull output. |+| 14 | VCC | power_in | Positive supply voltage. Operating range 2.0 V to 6.0 V (74HC02); absolute max +7 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Nexperia |+| Package | SOIC-14 |+| Category | Logic |+| Pins | 14 |++## Ordering variants++- `74HC02DD`+- `74HC02DPW`+- `74HC02DBQ`+- `74HC02DBZ`++## CAD (KiCad official)++- Symbol: `74HC02D`+- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`+- 3D model: SOIC-14 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/74HC02D.pdf) (14 pp, sha256 `2773ea732403ff2a`, 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/74hc02d-datasheet.pdf)

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