component
SN74HCT374DBR
Public Made by Adomby adom
Texas Instruments Flip Flops, SSOP-20-208mil. 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
markdownSN74HCT374DBR
Texas Instruments · Flip Flops · SSOP-20-208mil
SN74HCT374DBR 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 | OE | input | Active-low output enable that places the eight outputs in normal logic state or high-impedance state without affecting internal flip-flop operation. |
| 2 | 1Q | tri_state | Flip-flop 1 3-state output, drives ±6 mA at 5 V and goes high-impedance when OE is high. |
| 3 | 1D | input | Data input for flip-flop 1, captured on the positive transition of CLK. |
| 4 | 2D | input | Data input for flip-flop 2, captured on the positive transition of CLK. |
| 5 | 2Q | tri_state | Flip-flop 2 3-state output, drives ±6 mA at 5 V and goes high-impedance when OE is high. |
| 6 | 3Q | tri_state | Flip-flop 3 3-state output, drives ±6 mA at 5 V and goes high-impedance when OE is high. |
| 7 | 3D | input | Data input for flip-flop 3, captured on the positive transition of CLK. |
| 8 | 4D | input | Data input for flip-flop 4, captured on the positive transition of CLK. |
| 9 | 4Q | tri_state | Flip-flop 4 3-state output, drives ±6 mA at 5 V and goes high-impedance when OE is high. |
| 10 | GND | power_in | Ground reference for the device. |
| 11 | CLK | input | Clock input; Q outputs take the D logic levels on its positive transition. |
| 12 | 5Q | tri_state | Flip-flop 5 3-state output, drives ±6 mA at 5 V and goes high-impedance when OE is high. |
| 13 | 5D | input | Data input for flip-flop 5, captured on the positive transition of CLK. |
| 14 | 6D | input | Data input for flip-flop 6, captured on the positive transition of CLK. |
| 15 | 6Q | tri_state | Flip-flop 6 3-state output, drives ±6 mA at 5 V and goes high-impedance when OE is high. |
| 16 | 7Q | tri_state | Flip-flop 7 3-state output, drives ±6 mA at 5 V and goes high-impedance when OE is high. |
| 17 | 7D | input | Data input for flip-flop 7, captured on the positive transition of CLK. |
| 18 | 8D | input | Data input for flip-flop 8, captured on the positive transition of CLK. |
| 19 | 8Q | tri_state | Flip-flop 8 3-state output, drives ±6 mA at 5 V and goes high-impedance when OE is high. |
| 20 | VCC | power_in | Supply voltage, 4.5 V to 5.5 V recommended, with a 0.1-µF bypass capacitor placed close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-20-208mil |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74HCT374DBR - Footprint:
Package_SO:SSOP-20_5.3x7.2mm_P0.65mm - 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files:
sn74hct374dbr-etched.step/sn74hct374dbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hct374dbr.step/sn74hct374dbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (30 pp, sha256
d6967f49e2d44280, retrieved 2026-10-08, 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 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).