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Generated by kicad-footprint-generator · KiCad file format 20260206

Name	Last commit message	Last updated
docs	Publish 0.1.0 · Ray	12d ago
viewers	cy74fct821ctsoct: viewers · Ray	12d ago
cy74fct821ctsoct-etched.glb	cy74fct821ctsoct: factory component page (tier=lcsc) · Ray	12d ago
cy74fct821ctsoct-etched.step	cy74fct821ctsoct: factory component page (tier=lcsc) · Ray	12d ago
cy74fct821ctsoct-hero.glb	cy74fct821ctsoct: hero GLB from the etched model (keeps the MPN mark) · Ray	12d ago
cy74fct821ctsoct-hero.overlay.json	Publish 0.1.0 · Ray	12d ago
cy74fct821ctsoct.glb	Publish 0.1.0 · Ray	12d ago
cy74fct821ctsoct.kicad_mod	Publish 0.1.0 · Ray	12d ago
cy74fct821ctsoct.kicad_sym	Publish 0.1.0 · Ray	12d ago
cy74fct821ctsoct.lbr	Publish 0.1.0 · Ray	12d ago
cy74fct821ctsoct.step	Publish 0.1.0 · Ray	12d ago
package.json	Publish 0.1.0 · Ray	12d ago
page.json	Set visibility: public · Ray	12d ago
README.md	Publish 0.1.0 · Ray	12d ago

CY74FCT821CTSOCT

Texas Instruments · Flip Flops · SOIC-24-300mil

CY74FCT821CTSOCT from Texas Instruments, in a SOIC-24-300mil. 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	Output control: when OE is high the Y outputs are in the high-impedance state, and when OE is low the true register data is present at the Y outputs.
2	D0	input	D flip-flop data input for bit 0.
3	D1	input	D flip-flop data input for bit 1.
4	D2	input	D flip-flop data input for bit 2.
5	D3	input	D flip-flop data input for bit 3.
6	D4	input	D flip-flop data input for bit 4.
7	D5	input	D flip-flop data input for bit 5.
8	D6	input	D flip-flop data input for bit 6.
9	D7	input	D flip-flop data input for bit 7.
10	D8	input	D flip-flop data input for bit 8.
11	D9	input	D flip-flop data input for bit 9.
12	GND	power_in	Device ground; all absolute maximum voltage ratings are referenced to ground (-0.5 V to 7 V for supply, input and output voltages).
13	CP	input	Clock pulse for the register; data is entered into the register on the low-to-high clock transition.
14	Y9	tri_state	Register 3-state output for bit 9.
15	Y8	tri_state	Register 3-state output for bit 8.
16	Y7	tri_state	Register 3-state output for bit 7.
17	Y6	tri_state	Register 3-state output for bit 6.
18	Y5	tri_state	Register 3-state output for bit 5.
19	Y4	tri_state	Register 3-state output for bit 4.
20	Y3	tri_state	Register 3-state output for bit 3.
21	Y2	tri_state	Register 3-state output for bit 2.
22	Y1	tri_state	Register 3-state output for bit 1.
23	Y0	tri_state	Register 3-state output for bit 0.
24	VCC	power_in	Supply voltage, recommended operating range 4.75 V to 5.25 V (nominal 5 V).

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-24-300mil
Category	Logic
Pins	24

CAD (KiCad official)

Symbol: CY74FCT821CTSOCT
Footprint: Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm
3D model: SOIC-24-300mil (KiCad packages3D, STEP)
3D model files: cy74fct821ctsoct-etched.step / cy74fct821ctsoct-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cy74fct821ctsoct.step / cy74fct821ctsoct.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (14 pp, sha256 5826866e972c5a41, retrieved 2026-10-10, 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