component
CY74FCT273ATSOCT
Public Made by Adomby adom
Texas Instruments Flip Flops, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownCY74FCT273ATSOCT
Texas Instruments · Flip Flops · SOIC-20-300mil
CY74FCT273ATSOCT 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 | MR | input | Active-low master reset; a low level forces all Q outputs low regardless of clock or D inputs. |
| 2 | Q0 | output | Registered output of flip-flop 0, loaded from D0 on the low-to-high CP transition and forced low by MR. |
| 3 | D0 | input | Data input to flip-flop 0, which needs a 2 ns setup time and 1.5 ns hold time around the low-to-high CP transition. |
| 4 | D1 | input | Data input to flip-flop 1, which needs a 2 ns setup time and 1.5 ns hold time around the low-to-high CP transition. |
| 5 | Q1 | output | Registered output of flip-flop 1, loaded from D1 on the low-to-high CP transition and forced low by MR. |
| 6 | Q2 | output | Registered output of flip-flop 2, loaded from D2 on the low-to-high CP transition and forced low by MR. |
| 7 | D2 | input | Data input to flip-flop 2, which needs a 2 ns setup time and 1.5 ns hold time around the low-to-high CP transition. |
| 8 | D3 | input | Data input to flip-flop 3, which needs a 2 ns setup time and 1.5 ns hold time around the low-to-high CP transition. |
| 9 | Q3 | output | Registered output of flip-flop 3, loaded from D3 on the low-to-high CP transition and forced low by MR. |
| 10 | GND | power_in | Ground reference for the device. |
| 11 | CP | input | Common buffered clock; D inputs are transferred to the Q outputs on its low-to-high transition, with a minimum pulse width of 6 ns. |
| 12 | Q4 | output | Registered output of flip-flop 4, loaded from D4 on the low-to-high CP transition and forced low by MR. |
| 13 | D4 | input | Data input to flip-flop 4, which needs a 2 ns setup time and 1.5 ns hold time around the low-to-high CP transition. |
| 14 | D5 | input | Data input to flip-flop 5, which needs a 2 ns setup time and 1.5 ns hold time around the low-to-high CP transition. |
| 15 | Q5 | output | Registered output of flip-flop 5, loaded from D5 on the low-to-high CP transition and forced low by MR. |
| 16 | Q6 | output | Registered output of flip-flop 6, loaded from D6 on the low-to-high CP transition and forced low by MR. |
| 17 | D6 | input | Data input to flip-flop 6, which needs a 2 ns setup time and 1.5 ns hold time around the low-to-high CP transition. |
| 18 | D7 | input | Data input to flip-flop 7, which needs a 2 ns setup time and 1.5 ns hold time around the low-to-high CP transition. |
| 19 | Q7 | output | Registered output of flip-flop 7, loaded from D7 on the low-to-high CP transition and forced low by MR. |
| 20 | VCC | power_in | Supply pin; the datasheet's recommended supply range for the CY74FCT273T is 4.75 V to 5.25 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-20-300mil |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
CY74FCT273ATSOCT - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files:
cy74fct273atsoct-etched.step/cy74fct273atsoct-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cy74fct273atsoct.step/cy74fct273atsoct.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (13 pp, sha256
f862c55b121c0af8, retrieved 2026-10-08, 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).