component
SN74HC27DBR
Public Made by Adomby adom
Texas Instruments Logic Gates, SSOP-14-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSN74HC27DBR
Texas Instruments · Logic Gates · SSOP-14-208mil
SN74HC27DBR from Texas Instruments, in a SSOP-14-208mil. 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 | 1A | input | Input Channel 1, Input A to first NOR gate; accepts logic levels from 0 to VCC |
| 2 | 1B | input | Input Channel 1, Input B to first NOR gate; accepts logic levels from 0 to VCC |
| 3 | 2A | input | Input Channel 2, Input A to second NOR gate; accepts logic levels from 0 to VCC |
| 4 | 2B | input | Input Channel 2, Input B to second NOR gate; accepts logic levels from 0 to VCC |
| 5 | 2C | input | Input Channel 2, Input C to second NOR gate; accepts logic levels from 0 to VCC |
| 6 | 2Y | output | Output Channel 2, Output Y of NOR gate; outputs HIGH only when all inputs 2A, 2B, 2C are LOW |
| 7 | GND | power_in | Ground connection; reference voltage for logic levels and negative power supply |
| 8 | 3Y | output | Output Channel 3, Output Y of NOR gate; outputs HIGH only when all inputs 3A, 3B, 3C are LOW |
| 9 | 3A | input | Input Channel 3, Input A to third NOR gate; accepts logic levels from 0 to VCC |
| 10 | 3B | input | Input Channel 3, Input B to third NOR gate; accepts logic levels from 0 to VCC |
| 11 | 3C | input | Input Channel 3, Input C to third NOR gate; accepts logic levels from 0 to VCC |
| 12 | 1Y | output | Output Channel 1, Output Y of NOR gate; outputs HIGH only when all inputs 1A, 1B, 1C are LOW |
| 13 | 1C | input | Input Channel 1, Input C to first NOR gate; accepts logic levels from 0 to VCC |
| 14 | VCC | power_in | Positive Supply; voltage range 2V to 6V per Recommended Operating Conditions section 6.2 |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-14-208mil |
| Category | Logic |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
SN74HC27DBR - Footprint:
Package_SO:SSOP-14_5.3x6.2mm_P0.65mm - 3D model: SSOP-14-208mil (KiCad packages3D, STEP)
- 3D model files:
sn74hc27dbr-etched.step/sn74hc27dbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hc27dbr.step/sn74hc27dbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
54eb5ffa362c4ab5, retrieved 2026-09-24, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).