component
SN74LS33N
Public Made by Adomby adom
Texas Instruments Gates, PDIP-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
markdownSN74LS33N
Texas Instruments · Gates · PDIP-14
SN74LS33N from Texas Instruments, in a PDIP-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 | 1Y | output | Gate 1 open-collector output, requires external resistive pull-up; off-state output voltage max 7 V. |
| 2 | 1A | input | Gate 1 input A; NOR function with 1B, input voltage max 7 V for 'LS33. |
| 3 | 1B | input | Gate 1 input B; NOR function with 1A, input voltage max 7 V for 'LS33. |
| 4 | 2Y | output | Gate 2 open-collector output, requires external resistive pull-up; off-state output voltage max 7 V. |
| 5 | 2A | input | Gate 2 input A; NOR function with 2B, input voltage max 7 V for 'LS33. |
| 6 | 2B | input | Gate 2 input B; NOR function with 2A, input voltage max 7 V for 'LS33. |
| 7 | GND | power_in | Ground; voltage values are specified with respect to this network ground terminal. |
| 8 | 3A | input | Gate 3 input A; NOR function with 3B, input voltage max 7 V for 'LS33. |
| 9 | 3B | input | Gate 3 input B; NOR function with 3A, input voltage max 7 V for 'LS33. |
| 10 | 3Y | output | Gate 3 open-collector output, requires external resistive pull-up; off-state output voltage max 7 V. |
| 11 | 4A | input | Gate 4 input A; NOR function with 4B, input voltage max 7 V for 'LS33. |
| 12 | 4B | input | Gate 4 input B; NOR function with 4A, input voltage max 7 V for 'LS33. |
| 13 | 4Y | output | Gate 4 open-collector output, requires external resistive pull-up; off-state output voltage max 7 V. |
| 14 | VCC | power_in | Supply voltage; absolute maximum 7 V with respect to network ground. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | PDIP-14 |
| Category | Logic ICs |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
SN74LS33N - Footprint:
Package_DIP:DIP-14_W7.62mm - 3D model: PDIP-14 (KiCad packages3D, STEP)
- 3D model files:
sn74ls33n-etched.step/sn74ls33n-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ls33n.step/sn74ls33n.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (8 pp, sha256
7908f74693085265, retrieved 2026-10-26, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(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).