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SN74HC273DWR

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Texas Instruments Flip Flops, SOIC-20-300mil. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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SN74HC273DWR

Texas Instruments · Flip Flops · SOIC-20-300mil

SN74HC273DWR from Texas Instruments, in a SOIC-20-300mil. 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 CLR input Active low clear input; clears all flip-flops when held low.
2 1Q output Output from first D flip-flop.
3 1D input Data input 1; data present at this input is latched on the rising edge of CLK.
4 2D input Data input 2; data present at this input is latched on the rising edge of CLK.
5 2Q output Output from second D flip-flop.
6 3Q output Output from third D flip-flop.
7 3D input Data input 3; data present at this input is latched on the rising edge of CLK.
8 4D input Data input 4; data present at this input is latched on the rising edge of CLK.
9 4Q output Output from fourth D flip-flop.
10 GND power_in Ground; 0V reference for all circuitry.
11 CLK input Clock input; triggers flip-flops on rising edge.
12 5Q output Output from fifth D flip-flop.
13 5D input Data input 5; data present at this input is latched on the rising edge of CLK.
14 6D input Data input 6; data present at this input is latched on the rising edge of CLK.
15 6Q output Output from sixth D flip-flop.
16 7Q output Output from seventh D flip-flop.
17 7D input Data input 7; data present at this input is latched on the rising edge of CLK.
18 8D input Data input 8; data present at this input is latched on the rising edge of CLK.
19 8Q output Output from eighth D flip-flop.
20 VCC power_out Power supply positive voltage; 2V to 6V per recommended operating conditions.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-20-300mil
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: SN74HC273DWR
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: sn74hc273dwr-etched.step / sn74hc273dwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74hc273dwr.step / sn74hc273dwr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 c8f36a86a0f545d8, 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, primary claude-haiku-4-5-20251001 (text), consensus claude-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).

Datasheet PDF