component
SN74HCS574QPWRQ1
Public Made by Adomby adom
Texas Instruments Flip Flops, TSSOP-20. 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
markdownSN74HCS574QPWRQ1
Texas Instruments · Flip Flops · TSSOP-20
SN74HCS574QPWRQ1 from Texas Instruments, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OE | input | Active-low output enable for all eight channels |
| 2 | 1D | input | D-type data input for channel 1 with Schmitt-trigger |
| 3 | 2D | input | D-type data input for channel 2 with Schmitt-trigger |
| 4 | 3D | input | D-type data input for channel 3 with Schmitt-trigger |
| 5 | 4D | input | D-type data input for channel 4 with Schmitt-trigger |
| 6 | 5D | input | D-type data input for channel 5 with Schmitt-trigger |
| 7 | 6D | input | D-type data input for channel 6 with Schmitt-trigger |
| 8 | 7D | input | D-type data input for channel 7 with Schmitt-trigger |
| 9 | 8D | input | D-type data input for channel 8 with Schmitt-trigger |
| 10 | GND | power_in | Ground |
| 11 | CLK | input | Clock input for all channels, rising edge triggered, with Schmitt-trigger |
| 12 | 8Q | tri_state | Three-state output for channel 8 |
| 13 | 7Q | tri_state | Three-state output for channel 7 |
| 14 | 6Q | tri_state | Three-state output for channel 6 |
| 15 | 5Q | tri_state | Three-state output for channel 5 |
| 16 | 4Q | tri_state | Three-state output for channel 4 |
| 17 | 3Q | tri_state | Three-state output for channel 3 |
| 18 | 2Q | tri_state | Three-state output for channel 2 |
| 19 | 1Q | tri_state | Three-state output for channel 1 |
| 20 | VCC | power_out | Positive supply voltage |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74HCS574QPWRQ1 - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
sn74hcs574qpwrq1-etched.step/sn74hcs574qpwrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hcs574qpwrq1.step/sn74hcs574qpwrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
c667bc059adcb3e4, retrieved 2026-09-23, 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 0.2, 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).