# SN74AHC14QPWRQ1

**Texas Instruments** · Logic ICs · TSSOP-14

SN74AHC14QPWRQ1 from Texas Instruments, in a TSSOP-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 | Input 1A of inverter 1, a Schmitt-trigger input; unused inputs must be tied to VCC or GND and not left floating. |
| 2 | 1Y | output | Output 1Y of inverter 1, which performs Y = A; unused outputs may be left floating but must not be tied directly to VCC or GND. |
| 3 | 2A | input | Input 2A of inverter 2, a Schmitt-trigger input; unused inputs must be tied to VCC or GND and not left floating. |
| 4 | 2Y | output | Output 2Y of inverter 2, which performs Y = A; unused outputs may be left floating but must not be tied directly to VCC or GND. |
| 5 | 3A | input | Input 3A of inverter 3, a Schmitt-trigger input; unused inputs must be tied to VCC or GND and not left floating. |
| 6 | 3Y | output | Output 3Y of inverter 3, which performs Y = A; unused outputs may be left floating but must not be tied directly to VCC or GND. |
| 7 | GND | power_in | Ground pin; the datasheet states that GND must be able to sink the total output current plus ICC and transient current, and the absolute maximum continuous current through GND is ±50 mA. |
| 8 | 4Y | output | Output 4Y of inverter 4, which performs Y = A; unused outputs may be left floating but must not be tied directly to VCC or GND. |
| 9 | 4A | input | Input 4A of inverter 4, a Schmitt-trigger input; unused inputs must be tied to VCC or GND and not left floating. |
| 10 | 5Y | output | Output 5Y of inverter 5, which performs Y = A; unused outputs may be left floating but must not be tied directly to VCC or GND. |
| 11 | 5A | input | Input 5A of inverter 5, a Schmitt-trigger input; unused inputs must be tied to VCC or GND and not left floating. |
| 12 | 6Y | output | Output 6Y of inverter 6, which performs Y = A; unused outputs may be left floating but must not be tied directly to VCC or GND. |
| 13 | 6A | input | Input 6A of inverter 6, a Schmitt-trigger input; unused inputs must be tied to VCC or GND and not left floating. |
| 14 | VCC | power_in | Supply pin; the recommended operating range is 2 V to 5.5 V and the absolute maximum VCC is 7 V, with a 0.1 µF bypass capacitor recommended. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-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 |
|---|---|---|---|---|---|---|---|
| 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=-4mA, 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 |
| Quiescent supply current | ICC |  | 2 | 20 | µA | VI=VCC or GND, IO=0, VCC=5.5V | 5 |
| Propagation delay tPLH (A to Y) | tPLH | 1 | 8.3 | 15 | ns | CL=15pF, VCC=3.3V±0.3V | 5 |
| Propagation delay tPHL (A to Y) | tPHL | 1 | 8.3 | 15 | ns | CL=15pF, VCC=3.3V±0.3V | 5 |
| Propagation delay tPLH (A to Y) | tPLH | 1 | 10.8 | 18.5 | ns | CL=50pF, VCC=3.3V±0.3V | 5 |
| Propagation delay tPHL (A to Y) | tPHL | 1 | 10.8 | 18.5 | ns | CL=50pF, VCC=3.3V±0.3V | 5 |
| Propagation delay tPLH (A to Y) | tPLH | 1 | 5.5 | 10 | ns | CL=15pF, VCC=5V±0.5V | 5 |
| Propagation delay tPHL (A to Y) | tPHL | 1 | 5.5 | 10 | ns | CL=15pF, VCC=5V±0.5V | 5 |
| Propagation delay tPLH (A to Y) | tPLH | 1 | 7 | 12 | ns | CL=50pF, VCC=5V±0.5V | 5 |
| Propagation delay tPHL (A to Y) | tPHL | 1 | 7 | 12 | ns | CL=50pF, VCC=5V±0.5V | 5 |
| Quiet output maximum dynamic VOL | VOL(P) |  |  | 0.8 | V | VCC=5V, CL=50pF, TA=25°C | 6 |
| Quiet output minimum dynamic VOL | VOL(V) | -0.4 |  |  | V | VCC=5V, CL=50pF, TA=25°C | 6 |
| Quiet output minimum dynamic VOH | VOH(V) | 4.6 |  |  | V | VCC=5V, CL=50pF, TA=25°C | 6 |
| High-level dynamic input voltage | VIH(D) | 3.5 |  |  | V | VCC=5V, CL=50pF, TA=25°C | 6 |
| Low-level dynamic input voltage | VIL(D) |  |  | 1.5 | V | VCC=5V, CL=50pF, TA=25°C | 6 |
| Supply voltage | VCC | 2 |  | 5.5 | V |  | 4 |
| Input voltage | VI | 0 |  | 5.5 | V |  | 4 |
| Output voltage | VO | 0 |  |  | V | maximum is 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 | VCC | -0.5 |  | 7 | V |  | 4 |
| Input voltage | VI | -0.5 |  | 7 | V |  | 4 |
| Output voltage | VO | -0.5 |  |  | V | maximum is VCC+0.5 | 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 |
| ESD human-body model | V(ESD) | -2000 |  | 2000 | V | HBM per AEC Q100-002 | 4 |
| Junction-to-ambient thermal resistance | RθJA |  | 147.7 |  | °C/W | PW (TSSOP-14) package | 4 |

## CAD (KiCad official)

- Symbol: `SN74AHC14QPWRQ1`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `sn74ahc14qpwrq1-etched.step` / `sn74ahc14qpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74ahc14qpwrq1.step` / `sn74ahc14qpwrq1.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 `e9fbc604c0d0731c`, retrieved 2026-10-27, 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-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/sn74ahc14qpwrq1-datasheet.pdf)