# SN74AHC14QDRQ1

**Texas Instruments** · Inverters · SOIC-14

SN74AHC14QDRQ1 from Texas Instruments, in a SOIC-14. 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 | Schmitt-trigger input of inverter 1; unused inputs must be tied to VCC or GND. |
| 2 | 1Y | output | Output of inverter 1. |
| 3 | 2A | input | Schmitt-trigger input of inverter 2; unused inputs must be tied to VCC or GND. |
| 4 | 2Y | output | Output of inverter 2. |
| 5 | 3A | input | Schmitt-trigger input of inverter 3; unused inputs must be tied to VCC or GND. |
| 6 | 3Y | output | Output of inverter 3. |
| 7 | GND | power_in | Ground pin. |
| 8 | 4Y | output | Output of inverter 4. |
| 9 | 4A | input | Schmitt-trigger input of inverter 4; unused inputs must be tied to VCC or GND. |
| 10 | 5Y | output | Output of inverter 5. |
| 11 | 5A | input | Schmitt-trigger input of inverter 5; unused inputs must be tied to VCC or GND. |
| 12 | 6Y | output | Output of inverter 6. |
| 13 | 6A | input | Schmitt-trigger input of inverter 6; unused inputs must be tied to VCC or GND. |
| 14 | VCC | power_in | Power supply pin, operating range 2 V to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Logic ICs |
| Pins | 14 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | 2 |  | 5.5 | V |  | 4 |
| Input voltage | VI | 0 |  | 5.5 | V |  | 4 |
| Output voltage | VO | 0 |  |  | V | max = VCC | 4 |
| High-level output current | IOH | -50 |  |  | mA | VCC = 2V | 4 |
| High-level output current | IOH | -4 |  |  | mA | VCC=3.3V±0.3V | 4 |
| High-level output current | IOH | -8 |  |  | mA | VCC=5V±0.5V | 4 |
| Low-level output current | IOL |  |  | 50 | mA | VCC = 2V | 4 |
| Low-level output current | IOL |  |  | 4 | mA | VCC=3.3V±0.3V | 4 |
| Low-level output current | IOL |  |  | 8 | mA | VCC=5V±0.5V | 4 |
| Operating free-air temperature | TA | -40 |  | 125 | °C |  | 4 |
| Supply voltage range | VCC | -0.5 |  | 7 | V |  | 4 |
| Input voltage range | VI | -0.5 |  | 7 | V |  | 4 |
| Input clamp current | IIK | -20 |  |  | mA | VI < 0 | 4 |
| Output clamp current | IOK | -20 |  | 20 | mA | VO < 0 or VO > VCC | 4 |
| Continuous output current | IO | -25 |  | 25 | mA | VO = 0 to VCC | 4 |
| Continuous current through VCC or GND |  | -50 |  | 50 | mA |  | 4 |
| Storage temperature range | Tstg | -65 |  | 150 | °C |  | 4 |
| Junction-to-ambient thermal resistance (D, 14-pin) | RθJA |  | 124.6 |  | °C/W | D package | 4 |
| Positive-going input threshold voltage | VT+ | 1.2 |  | 2.2 | V | VCC = 3V | 5 |
| Positive-going input threshold voltage | VT+ | 1.75 |  | 3.15 | V | VCC = 4.5V | 5 |
| Positive-going input threshold voltage | VT+ | 2.15 |  | 3.85 | V | VCC = 5.5V | 5 |
| Negative-going input threshold voltage | VT− | 0.9 |  | 1.9 | V | VCC = 3V | 5 |
| Negative-going input threshold voltage | VT− | 1.35 |  | 2.75 | V | VCC = 4.5V | 5 |
| Negative-going input threshold voltage | VT− | 1.65 |  | 3.35 | V | VCC = 5.5V | 5 |
| Hysteresis (VT+ − VT−) | ΔVT | 0.3 |  | 1.2 | V | VCC = 3V | 5 |
| Hysteresis (VT+ − VT−) | ΔVT | 0.4 |  | 1.4 | V | VCC = 4.5V | 5 |
| Hysteresis (VT+ − VT−) | ΔVT | 0.5 |  | 1.6 | V | VCC = 5.5V | 5 |
| High-level output voltage | VOH | 1.9 | 2 |  | V | IOH = -50µA, VCC = 2V | 5 |
| High-level output voltage | VOH | 2.9 | 3 |  | V | IOH = -50µA, VCC = 3V | 5 |
| High-level output voltage | VOH | 4.4 | 4.5 |  | V | IOH = -50µA, VCC = 4.5V | 5 |
| High-level output voltage | VOH | 2.48 |  |  | V | IOH=-4 mA, VCC = 3V | 5 |
| High-level output voltage | VOH | 3.8 |  |  | V | IOH = -8mA, VCC = 4.5V | 5 |
| Low-level output voltage | VOL |  |  | 0.1 | V | IOL = 50μA, VCC = 2V | 5 |
| Low-level output voltage | VOL |  |  | 0.5 | V | IOL=4mA, VCC = 3V | 5 |
| Input leakage current | II | -1 |  | 1 | μA | VI=5.5V or GND, VCC = 0V to 5.5V | 5 |
| Supply current | ICC |  |  | 20 | μA | VI = VCC or GND, IO = 0, VCC = 5.5V | 5 |
| Input capacitance | Ci |  | 2 | 10 | pF | VI=VCC or GND, VCC = 5V | 5 |
| Propagation delay A to Y (tPLH, tPHL) | tpd | 1 | 8.3 | 15 | ns | VCC = 3.3V±0.3V, CL = 15pF | 5 |
| Propagation delay A to Y (tPLH, tPHL) | tpd | 1 | 10.8 | 18.5 | ns | VCC = 3.3V±0.3V, CL = 50pF | 5 |
| Propagation delay A to Y (tPLH, tPHL) | tpd | 1 | 5.5 | 10 | ns | VCC = 5V±0.5V, CL = 15pF | 5 |
| Propagation delay A to Y (tPLH, tPHL) | tpd | 1 | 7 | 12 | ns | VCC = 5V±0.5V, CL = 50pF | 5 |
| Power dissipation capacitance | Cpd |  | 9 |  | pF | No load, f = 1MHz, VCC = 5V, TA = 25°C | 6 |

## CAD (KiCad official)

- Symbol: `SN74AHC14QDRQ1`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `sn74ahc14qdrq1-etched.step` / `sn74ahc14qdrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74ahc14qdrq1.step` / `sn74ahc14qdrq1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/sn74ahc14q-q1) (28 pp, sha256 `f433a685d75de089`, retrieved 2026-10-23, 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`, primary `claude-sonnet-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/sn74ahc14qdrq1-datasheet.pdf)