component
CD74HC20M
Public Made by Adomby adom
Texas Instruments Logic Gates, SOIC-14. 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
markdownCD74HC20M
Texas Instruments · Logic Gates · SOIC-14
CD74HC20M from Texas Instruments, in a SOIC-14. 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 | Channel 1 input A of the first 4-input NAND gate, which performs Y = A·B·C·D in positive logic; standard CMOS input with the input voltage range 0 to VCC. |
| 2 | 1B | input | Channel 1 input B of the first 4-input NAND gate; unused inputs must be tied to VCC or GND and must not be left floating. |
| 3 | NC | unconnected | Not internally connected. |
| 4 | 1C | input | Channel 1 input C of the first 4-input NAND gate; unused inputs must be tied to VCC or GND and must not be left floating. |
| 5 | 1D | input | Channel 1 input D of the first 4-input NAND gate; unused inputs must be tied to VCC or GND and must not be left floating. |
| 6 | 1Y | output | Channel 1 NAND output Y (Y = A·B·C·D) from a balanced CMOS push-pull output; output current is limited to ±25 mA continuous per the absolute maximum ratings. |
| 7 | GND | power_in | Ground reference for the device; continuous current through VCC or GND must not exceed ±50 mA. |
| 8 | 2Y | output | Channel 2 NAND output Y (Y = A·B·C·D) from a balanced CMOS push-pull output; output current is limited to ±25 mA continuous per the absolute maximum ratings. |
| 9 | 2A | input | Channel 2 input A of the second 4-input NAND gate; standard CMOS input with the input voltage range 0 to VCC. |
| 10 | 2B | input | Channel 2 input B of the second 4-input NAND gate; unused inputs must be tied to VCC or GND and must not be left floating. |
| 11 | NC | unconnected | Not internally connected. |
| 12 | 2C | input | Channel 2 input C of the second 4-input NAND gate; unused inputs must be tied to VCC or GND and must not be left floating. |
| 13 | 2D | input | Channel 2 input D of the second 4-input NAND gate; unused inputs must be tied to VCC or GND and must not be left floating. |
| 14 | VCC | power_in | Positive supply; recommended operating range is 2 V to 6 V, with an absolute maximum of 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Logic |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
CD74HC20M - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
cd74hc20m-etched.step/cd74hc20m-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cd74hc20m.step/cd74hc20m.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (27 pp, sha256
3c399a095d2d45af, 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-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).