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SN74AHCT14QDRQ1
Public Made by Adomby adom
Texas Instruments Inverters, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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|---|---|
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SN74AHCT14QDRQ1
Texas Instruments · Inverters · SOIC-14
SN74AHCT14QDRQ1 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 | Input of inverter 1; a Schmitt-trigger input with separate positive-going and negative-going thresholds, and it must be tied to VCC or GND if unused. |
| 2 | 1Y | output | Output of inverter 1, the logic inverse of input 1A; rated for IOH of −8 mA and IOL of 8 mA. |
| 3 | 2A | input | Input of inverter 2; a Schmitt-trigger input with separate positive-going and negative-going thresholds, and it must be tied to VCC or GND if unused. |
| 4 | 2Y | output | Output of inverter 2, the logic inverse of input 2A; rated for IOH of −8 mA and IOL of 8 mA. |
| 5 | 3A | input | Input of inverter 3; a Schmitt-trigger input with separate positive-going and negative-going thresholds, and it must be tied to VCC or GND if unused. |
| 6 | 3Y | output | Output of inverter 3, the logic inverse of input 3A; rated for IOH of −8 mA and IOL of 8 mA. |
| 7 | GND | power_in | Ground reference pin for the device. |
| 8 | 4Y | output | Output of inverter 4, the logic inverse of input 4A; rated for IOH of −8 mA and IOL of 8 mA. |
| 9 | 4A | input | Input of inverter 4; a Schmitt-trigger input with separate positive-going and negative-going thresholds, and it must be tied to VCC or GND if unused. |
| 10 | 5Y | output | Output of inverter 5, the logic inverse of input 5A; rated for IOH of −8 mA and IOL of 8 mA. |
| 11 | 5A | input | Input of inverter 5; a Schmitt-trigger input with separate positive-going and negative-going thresholds, and it must be tied to VCC or GND if unused. |
| 12 | 6Y | output | Output of inverter 6, the logic inverse of input 6A; rated for IOH of −8 mA and IOL of 8 mA. |
| 13 | 6A | input | Input of inverter 6; a Schmitt-trigger input with separate positive-going and negative-going thresholds, and it must be tied to VCC or GND if unused. |
| 14 | VCC | power_in | Supply pin; recommended operating supply range is 4.5 V to 5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Logic |
| 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+ | 0.9 | 1.9 | V | VCC = 4.5 V | 5 | |
| Positive-going input threshold voltage | VT+ | 1 | 2.1 | V | VCC = 5.5 V | 5 | |
| Negative-going input threshold voltage | VT- | 0.5 | 1.5 | V | VCC = 4.5 V | 5 | |
| Negative-going input threshold voltage | VT- | 0.6 | 1.7 | V | VCC = 5.5 V | 5 | |
| Hysteresis (VT+ - VT-) | ΔVT | 0.4 | 1.4 | V | VCC = 4.5 V | 5 | |
| Hysteresis (VT+ - VT-) | ΔVT | 0.4 | 1.5 | V | VCC = 5.5 V | 5 | |
| High-level output voltage | VOH | 4.4 | 4.5 | V | IOH = -50 μA; VCC = 4.5 V | 5 | |
| High-level output voltage | VOH | 3.8 | V | IOH = -8 mA; VCC = 4.5 V | 5 | ||
| Low-level output voltage | VOL | 0.1 | V | IOL = 50 μA; VCC = 4.5 V | 5 | ||
| Low-level output voltage | VOL | 0.44 | V | IOL = 8 mA; VCC = 4.5 V | 5 | ||
| Input leakage current | II | -1 | 1 | μA | VI = 5.5 V or GND, 0 V to 5.5 V | 5 | |
| Supply current | ICC | 2 | 20 | μA | VI = VCC or GND, IO = 0; VCC = 5.5 V | 5 | |
| Supply current increase per input at TTL level | ΔICC | 1.35 | 1.5 | mA | One input at 3.4 V, other inputs at VCC or GND; VCC = 5.5 V | 5 | |
| Input capacitance | Ci | 2 | 10 | pF | VI = VCC or GND; VCC = 5 V | 5 | |
| Propagation delay low-to-high (A to Y) | tPLH | 1 | 8 | ns | CL = 15 pF; VCC = 5 V ± 0.5 V | 5 | |
| Propagation delay high-to-low (A to Y) | tPHL | 1 | 8 | ns | CL = 15 pF; VCC = 5 V ± 0.5 V | 5 | |
| Propagation delay low-to-high (A to Y) | tPLH | 1 | 9 | ns | CL = 50 pF; VCC = 5 V ± 0.5 V | 5 | |
| Propagation delay high-to-low (A to Y) | tPHL | 1 | 9 | ns | CL = 50 pF; VCC = 5 V ± 0.5 V | 5 | |
| Quiet output, maximum dynamic VOL | VOL(P) | 0.9 | V | VCC = 5 V, CL = 50 pF, TA = 25°C | 5 | ||
| Quiet output, minimum dynamic VOL | VOL(V) | -0.7 | V | VCC = 5 V, CL = 50 pF, TA = 25°C | 5 | ||
| Quiet output, minimum dynamic VOH | VOH(V) | 4.3 | V | VCC = 5 V, CL = 50 pF, TA = 25°C | 5 | ||
| High-level dynamic input voltage | VIH(D) | 2.1 | V | VCC = 5 V, CL = 50 pF, TA = 25°C | 5 | ||
| Low-level dynamic input voltage | VIL(D) | 0.5 | V | VCC = 5 V, CL = 50 pF, TA = 25°C | 5 | ||
| Supply voltage | VCC | 4.5 | 5.5 | V | 4 | ||
| Input voltage | VI | 0 | 5.5 | V | 4 | ||
| Output voltage | VO | 0 | V | 4 | |||
| High-level output current | IOH | -8 | mA | 4 | |||
| Low-level output current | IOL | 8 | mA | 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 | ||
| Output voltage range | VO | -0.5 | 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 | ||
| Electrostatic discharge, human body model | V(ESD) | -2000 | 2000 | V | HBM, per AEC Q100-002 | 4 | |
| Electrostatic discharge, charged device model | V(ESD) | -200 | 200 | V | CDM, per AEC Q100-011 | 4 | |
| Junction-to-ambient thermal resistance | RθJA | 86 | °C/W | D (SOIC, 14 pins) package | 4 |
CAD (KiCad official)
- Symbol:
SN74AHCT14QDRQ1 - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
sn74ahct14qdrq1-etched.step/sn74ahct14qdrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ahct14qdrq1.step/sn74ahct14qdrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (24 pp, sha256
1f2a38478c9e6ed7, retrieved 2026-10-17, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).