# SN74LS00NSR

**Texas Instruments** · Logic Gates · SOP-14-208mil

SN74LS00NSR from Texas Instruments, in a SOP-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 | Gate 1 input A; TTL-compatible 2-input NAND input (VIH ≥ 2V, VIL ≤ 0.8V) |
| 2 | 1B | input | Gate 1 input B; TTL-compatible 2-input NAND input (VIH ≥ 2V, VIL ≤ 0.8V) |
| 3 | 1Y | output | Gate 1 output; NAND output Y = 1A·1B (IOL 8mA per operating conditions) |
| 4 | 2A | input | Gate 2 input A; TTL-compatible 2-input NAND input (VIH ≥ 2V, VIL ≤ 0.8V) |
| 5 | 2B | input | Gate 2 input B; TTL-compatible 2-input NAND input (VIH ≥ 2V, VIL ≤ 0.8V) |
| 6 | 2Y | output | Gate 2 output; NAND output Y = 2A·2B (IOL 8mA per operating conditions) |
| 7 | GND | power_in | Ground reference; negative power supply connection |
| 8 | 3Y | output | Gate 3 output; NAND output Y = 3A·3B (IOL 8mA per operating conditions) |
| 9 | 3B | input | Gate 3 input B; TTL-compatible 2-input NAND input (VIH ≥ 2V, VIL ≤ 0.8V) |
| 10 | 3A | input | Gate 3 input A; TTL-compatible 2-input NAND input (VIH ≥ 2V, VIL ≤ 0.8V) |
| 11 | 4Y | output | Gate 4 output; NAND output Y = 4A·4B (IOL 8mA per operating conditions) |
| 12 | 4B | input | Gate 4 input B; TTL-compatible 2-input NAND input (VIH ≥ 2V, VIL ≤ 0.8V) |
| 13 | 4A | input | Gate 4 input A; TTL-compatible 2-input NAND input (VIH ≥ 2V, VIL ≤ 0.8V) |
| 14 | VCC | power_in | Positive power supply; operating range 4.75V to 5.25V for SN74LS00 |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOP-14-208mil |
| Category | Logic |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `SN74LS00NSR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOP-14-208mil (KiCad packages3D, STEP)
- 3D model files: `sn74ls00nsr-etched.step` / `sn74ls00nsr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74ls00nsr.step` / `sn74ls00nsr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/sn74ls00) (40 pp, sha256 `ac4bbf6801413a20`, retrieved 2026-10-01, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-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).

[Datasheet PDF](docs/sn74ls00nsr-datasheet.pdf)