component
SN74HC273QPWRG4Q1
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
markdownSN74HC273QPWRG4Q1
Texas Instruments · Flip Flops · TSSOP-20
SN74HC273QPWRG4Q1 from Texas Instruments, in a TSSOP-20. 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 | CLR | input | Active-low direct clear input that forces all Q outputs low independent of CLK and D, and unused inputs must be held at VCC or GND. |
| 2 | 1Q | output | Output of flip-flop 1, which follows the data on 1D at the positive-going edge of CLK while CLR is high. |
| 3 | 1D | input | Data input to flip-flop 1, which must meet the setup time before and the hold time after the positive-going CLK edge. |
| 4 | 2D | input | Data input to flip-flop 2, which must meet the setup time before and the hold time after the positive-going CLK edge. |
| 5 | 2Q | output | Output of flip-flop 2, which follows the data on 2D at the positive-going edge of CLK while CLR is high. |
| 6 | 3Q | output | Output of flip-flop 3, which follows the data on 3D at the positive-going edge of CLK while CLR is high. |
| 7 | 3D | input | Data input to flip-flop 3, which must meet the setup time before and the hold time after the positive-going CLK edge. |
| 8 | 4D | input | Data input to flip-flop 4, which must meet the setup time before and the hold time after the positive-going CLK edge. |
| 9 | 4Q | output | Output of flip-flop 4, which follows the data on 4D at the positive-going edge of CLK while CLR is high. |
| 10 | GND | power_in | Ground reference for the device. |
| 11 | CLK | input | Clock input; data is transferred to the Q outputs on the positive-going edge, and D has no effect while CLK is held high or low. |
| 12 | 5Q | output | Output of flip-flop 5, which follows the data on 5D at the positive-going edge of CLK while CLR is high. |
| 13 | 5D | input | Data input to flip-flop 5, which must meet the setup time before and the hold time after the positive-going CLK edge. |
| 14 | 6D | input | Data input to flip-flop 6, which must meet the setup time before and the hold time after the positive-going CLK edge. |
| 15 | 6Q | output | Output of flip-flop 6, which follows the data on 6D at the positive-going edge of CLK while CLR is high. |
| 16 | 7Q | output | Output of flip-flop 7, which follows the data on 7D at the positive-going edge of CLK while CLR is high. |
| 17 | 7D | input | Data input to flip-flop 7, which must meet the setup time before and the hold time after the positive-going CLK edge. |
| 18 | 8D | input | Data input to flip-flop 8, which must meet the setup time before and the hold time after the positive-going CLK edge. |
| 19 | 8Q | output | Output of flip-flop 8, which follows the data on 8D at the positive-going edge of CLK while CLR is high. |
| 20 | VCC | power_in | Supply voltage, recommended operating range 2 V to 6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74HC273QPWRG4Q1 - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
sn74hc273qpwrg4q1-etched.step/sn74hc273qpwrg4q1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hc273qpwrg4q1.step/sn74hc273qpwrg4q1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (16 pp, sha256
d61ed979e031facb, retrieved 2026-10-11, tier: lcsc) - 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).