# 74HC04BQ

**Nexperia** · Inverters · DHVQFN-14-EP(2.5x3)

74HC04BQ from Nexperia, in a DHVQFN-14-EP(2.5x3). 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 | 1A | input | Data input of inverter 1; the input clamp diodes allow current-limiting resistors for inputs above VCC, with input clamping current limited to ±20 mA. |
| 2 | 1Y | output | Data output of inverter 1 (Y = NOT A); output current is limited to ±25 mA. |
| 3 | 2A | input | Data input of inverter 2; the input clamp diodes allow current-limiting resistors for inputs above VCC, with input clamping current limited to ±20 mA. |
| 4 | 2Y | output | Data output of inverter 2 (Y = NOT A); output current is limited to ±25 mA. |
| 5 | 3A | input | Data input of inverter 3; the input clamp diodes allow current-limiting resistors for inputs above VCC, with input clamping current limited to ±20 mA. |
| 6 | 3Y | output | Data output of inverter 3 (Y = NOT A); output current is limited to ±25 mA. |
| 7 | GND | power_in | Ground (0 V) reference for all voltages; ground current is rated at -50 mA. |
| 8 | 4Y | output | Data output of inverter 4 (Y = NOT A); output current is limited to ±25 mA. |
| 9 | 4A | input | Data input of inverter 4; the input clamp diodes allow current-limiting resistors for inputs above VCC, with input clamping current limited to ±20 mA. |
| 10 | 5Y | output | Data output of inverter 5 (Y = NOT A); output current is limited to ±25 mA. |
| 11 | 5A | input | Data input of inverter 5; the input clamp diodes allow current-limiting resistors for inputs above VCC, with input clamping current limited to ±20 mA. |
| 12 | 6Y | output | Data output of inverter 6 (Y = NOT A); output current is limited to ±25 mA. |
| 13 | 6A | input | Data input of inverter 6; the input clamp diodes allow current-limiting resistors for inputs above VCC, with input clamping current limited to ±20 mA. |
| 14 | VCC | power_in | Supply voltage: 2.0 V to 6.0 V for 74HC04 and 4.5 V to 5.5 V for 74HCT04; absolute maximum is -0.5 V to +7 V. |
| 15 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | DHVQFN-14-EP(2.5x3) |
| Category | Logic |
| Pins | 15 |

## CAD (KiCad official)

- Symbol: `74HC04BQ`
- Footprint: `Package_DFN_QFN:DHVQFN-14-1EP_2.5x3mm_P0.5mm_EP1x1.5mm`
- 3D model: DHVQFN-14-EP(2.5x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal VQFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `74hc04bq-etched.step` / `74hc04bq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74hc04bq.step` / `74hc04bq.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588906342392205312) (15 pp, sha256 `378aac1a6ecb8e2c`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/74hc04bq-datasheet.pdf)