component
SN74AHCT74QPWRQ1
Public Made by Adomby adom
Texas Instruments Flip Flops, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSN74AHCT74QPWRQ1
Texas Instruments · Flip Flops · TSSOP-14
SN74AHCT74QPWRQ1 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 | 1CLR | input | Clear input (active low) for flip-flop 1; resets Q output to low regardless of other inputs |
| 2 | 1D | input | Data input for flip-flop 1; sampled and transferred to Q on positive clock edge when PRE and CLR are inactive |
| 3 | 1CLK | input | Clock input (positive-edge triggered) for flip-flop 1; transfers D data to Q output when PRE and CLR are inactive |
| 4 | 1PRE | input | Preset input (active low) for flip-flop 1; sets Q output to high regardless of other inputs |
| 5 | 1Q | output | Q output of flip-flop 1; stores the captured data bit or preset state |
| 6 | 1Q̄ | output | Inverted Q output of flip-flop 1; complement of 1Q |
| 7 | GND | power_in | Ground; 0V reference potential for the device |
| 8 | 2Q̄ | output | Inverted Q output of flip-flop 2; complement of 2Q |
| 9 | 2Q | output | Q output of flip-flop 2; stores the captured data bit or preset state |
| 10 | 2PRE | input | Preset input (active low) for flip-flop 2; sets Q output to high regardless of other inputs |
| 11 | 2CLK | input | Clock input (positive-edge triggered) for flip-flop 2; transfers D data to Q output when PRE and CLR are inactive |
| 12 | 2D | input | Data input for flip-flop 2; sampled and transferred to Q on positive clock edge when PRE and CLR are inactive |
| 13 | 2CLR | input | Clear input (active low) for flip-flop 2; resets Q output to low regardless of other inputs |
| 14 | VCC | power_in | Positive supply voltage; 4.5V to 5.5V recommended operating range |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-14 |
| Category | Logic |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
SN74AHCT74QPWRQ1 - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
sn74ahct74qpwrq1-etched.step/sn74ahct74qpwrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ahct74qpwrq1.step/sn74ahct74qpwrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (16 pp, sha256
95d94ebb340468a8, retrieved 2026-09-24, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).