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CY74FCT574TSOC

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Texas Instruments Flip Flops, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CY74FCT574TSOC

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

CY74FCT574TSOC from Texas Instruments, in a SOIC-20-300mil. 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 OE input Active-low output enable: when OE is low the flip-flop contents appear on O0-O7, and when OE is high the outputs go to the high-impedance state without changing the flip-flops.
2 D0 input Data input to flip-flop 0, stored on the low-to-high CP transition with a minimum setup time of 2 ns and hold time of 1.5 ns.
3 D1 input Data input to flip-flop 1, stored on the low-to-high CP transition with a minimum setup time of 2 ns and hold time of 1.5 ns.
4 D2 input Data input to flip-flop 2, stored on the low-to-high CP transition with a minimum setup time of 2 ns and hold time of 1.5 ns.
5 D3 input Data input to flip-flop 3, stored on the low-to-high CP transition with a minimum setup time of 2 ns and hold time of 1.5 ns.
6 D4 input Data input to flip-flop 4, stored on the low-to-high CP transition with a minimum setup time of 2 ns and hold time of 1.5 ns.
7 D5 input Data input to flip-flop 5, stored on the low-to-high CP transition with a minimum setup time of 2 ns and hold time of 1.5 ns.
8 D6 input Data input to flip-flop 6, stored on the low-to-high CP transition with a minimum setup time of 2 ns and hold time of 1.5 ns.
9 D7 input Data input to flip-flop 7, stored on the low-to-high CP transition with a minimum setup time of 2 ns and hold time of 1.5 ns.
10 GND power_in Ground reference for the device.
11 CP input Buffered common clock; the flip-flops capture their D inputs on the low-to-high transition, with a clock pulse duration of 7 ns high or low for the CY74FCT574T.
12 O7 tri_state Three-state output of flip-flop 7, active when OE is low and high-impedance when OE is high; sinks up to 64 mA for the CY74FCT574T.
13 O6 tri_state Three-state output of flip-flop 6, active when OE is low and high-impedance when OE is high; sinks up to 64 mA for the CY74FCT574T.
14 O5 tri_state Three-state output of flip-flop 5, active when OE is low and high-impedance when OE is high; sinks up to 64 mA for the CY74FCT574T.
15 O4 tri_state Three-state output of flip-flop 4, active when OE is low and high-impedance when OE is high; sinks up to 64 mA for the CY74FCT574T.
16 O3 tri_state Three-state output of flip-flop 3, active when OE is low and high-impedance when OE is high; sinks up to 64 mA for the CY74FCT574T.
17 O2 tri_state Three-state output of flip-flop 2, active when OE is low and high-impedance when OE is high; sinks up to 64 mA for the CY74FCT574T.
18 O1 tri_state Three-state output of flip-flop 1, active when OE is low and high-impedance when OE is high; sinks up to 64 mA for the CY74FCT574T.
19 O0 tri_state Three-state output of flip-flop 0, active when OE is low and high-impedance when OE is high; sinks up to 64 mA for the CY74FCT574T.
20 VCC power_in Supply voltage, 4.75 V to 5.25 V (5 V nominal) for the CY74FCT574T.

Key specifications

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

CAD (KiCad official)

  • Symbol: CY74FCT574TSOC
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: cy74fct574tsoc-etched.step / cy74fct574tsoc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cy74fct574tsoc.step / cy74fct574tsoc.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (13 pp, sha256 b7efb6c570f508de, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (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