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SN74LS374DBR

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Texas Instruments Flip Flops, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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SN74LS374DBR

Texas Instruments · Flip Flops · SSOP-20-208mil

SN74LS374DBR from Texas Instruments, in a SSOP-20-208mil. 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 OC input Output control input; low enables 3-state outputs, high places all outputs in high-impedance
2 1Q tri_state Q output (flip-flop 1); 3-state buffer outputs captured D1 value
3 1D input Data input D1; captured on rising CLK edge and transferred to Q1 output
4 2D input Data input D2; captured on rising CLK edge and transferred to Q2 output
5 2Q tri_state Q output (flip-flop 2); 3-state buffer outputs captured D2 value
6 3Q tri_state Q output (flip-flop 3); 3-state buffer outputs captured D3 value
7 3D input Data input D3; captured on rising CLK edge and transferred to Q3 output
8 4D input Data input D4; captured on rising CLK edge and transferred to Q4 output
9 4Q tri_state Q output (flip-flop 4); 3-state buffer outputs captured D4 value
10 GND power_in Ground; negative power supply reference
11 CLK input Clock input; rising edge transfers all D inputs to corresponding Q outputs when OC is low
12 5Q tri_state Q output (flip-flop 5); 3-state buffer outputs captured D5 value
13 5D input Data input D5; captured on rising CLK edge and transferred to Q5 output
14 6D input Data input D6; captured on rising CLK edge and transferred to Q6 output
15 6Q tri_state Q output (flip-flop 6); 3-state buffer outputs captured D6 value
16 7Q tri_state Q output (flip-flop 7); 3-state buffer outputs captured D7 value
17 7D input Data input D7; captured on rising CLK edge and transferred to Q7 output
18 8D input Data input D8; captured on rising CLK edge and transferred to Q8 output
19 8Q tri_state Q output (flip-flop 8); 3-state buffer outputs captured D8 value
20 VCC power_in Positive power supply; typically +5V for LS series

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-20-208mil
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: SN74LS374DBR
  • Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
  • 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
  • 3D model files: sn74ls374dbr-etched.step / sn74ls374dbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ls374dbr.step / sn74ls374dbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (34 pp, sha256 5d2c396010d2b304, retrieved 2026-10-01, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-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).

Datasheet PDF