# SN74LS04D

**Texas Instruments** · Inverters · SOIC-14

SN74LS04D 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 | Inverter 1 input, with VIH min 2 V, VIL max 0.8 V and 7 V maximum input voltage for the SN74LS04. |
| 2 | 1Y | output | Inverter 1 output, Y = A inverted, rated for IOL 8 mA and IOH -0.4 mA on the SN74LS04. |
| 3 | 2A | input | Inverter 2 input, with VIH min 2 V, VIL max 0.8 V and 7 V maximum input voltage for the SN74LS04. |
| 4 | 2Y | output | Inverter 2 output, Y = A inverted, rated for IOL 8 mA and IOH -0.4 mA on the SN74LS04. |
| 5 | 3A | input | Inverter 3 input, with VIH min 2 V, VIL max 0.8 V and 7 V maximum input voltage for the SN74LS04. |
| 6 | 3Y | output | Inverter 3 output, Y = A inverted, rated for IOL 8 mA and IOH -0.4 mA on the SN74LS04. |
| 7 | GND | power_in | Ground terminal; all supply voltage values are specified with respect to it. |
| 8 | 4Y | output | Inverter 4 output, Y = A inverted, rated for IOL 8 mA and IOH -0.4 mA on the SN74LS04. |
| 9 | 4A | input | Inverter 4 input, with VIH min 2 V, VIL max 0.8 V and 7 V maximum input voltage for the SN74LS04. |
| 10 | 5Y | output | Inverter 5 output, Y = A inverted, rated for IOL 8 mA and IOH -0.4 mA on the SN74LS04. |
| 11 | 5A | input | Inverter 5 input, with VIH min 2 V, VIL max 0.8 V and 7 V maximum input voltage for the SN74LS04. |
| 12 | 6Y | output | Inverter 6 output, Y = A inverted, rated for IOL 8 mA and IOH -0.4 mA on the SN74LS04. |
| 13 | 6A | input | Inverter 6 input, with VIH min 2 V, VIL max 0.8 V and 7 V maximum input voltage for the SN74LS04. |
| 14 | VCC | power_in | Supply voltage, recommended 4.75 V to 5.25 V for the SN74LS04 (absolute maximum 7 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Logic ICs |
| Pins | 14 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | 4.75 | 5 | 5.25 | V | SN74LS04 | 6 |
| High-level input voltage | VIH | 2 |  |  | V | SN74LS04 | 6 |
| Low-level input voltage | VIL |  |  | 0.8 | V | SN74LS04 | 6 |
| High-level output current | IOH |  |  | -0.4 | mA | SN74LS04 | 6 |
| Low-level output current | IOL |  |  | 8 | mA | SN74LS04 | 6 |
| Operating free-air temperature | TA | 0 |  | 70 | °C | SN74LS04 | 6 |
| Input clamp voltage | VIK |  |  | -1.5 | V | VCC = MIN, II = −18 mA | 6 |
| High-level output voltage | VOH | 2.7 | 3.4 |  | V | VCC = MIN, VIL = MAX, IOH = −0.4 mA | 6 |
| Low-level output voltage | VOL |  | 0.25 | 0.4 | V | VCC = MIN, VIH = 2 V, IOL = 4 mA | 6 |
| Input current at max input voltage | II |  |  | 0.1 | mA | VCC = MAX, VI = 7 V | 6 |
| High-level input current | IIH |  |  | 20 | µA | VCC = MAX, VI = 2.7 V | 6 |
| Low-level input current | IIL |  |  | -0.4 | mA | VCC = MAX, VI = 0.4 V | 6 |
| Short-circuit output current | IOS | -20 |  | -100 | mA | VCC = MAX | 6 |
| Supply current, outputs high | ICCH |  | 1.2 | 2.4 | mA | VCC = MAX, VI = 0 V | 6 |
| Supply current, outputs low | ICCL |  | 3.6 | 6.6 | mA | VCC = MAX, VI = 4.5 V | 6 |
| Propagation delay, low-to-high | tPLH |  | 9 | 15 | ns | A to Y, RL = 2 kΩ, CL = 15 pF, VCC = 5 V, TA = 25°C | 6 |
| Propagation delay, high-to-low | tPHL |  | 10 | 15 | ns | A to Y, RL = 2 kΩ, CL = 15 pF, VCC = 5 V, TA = 25°C | 6 |
| Supply voltage | VCC |  |  | 7 | V | see Note 1 | 5 |
| Input voltage | VI |  |  | 7 | V | 'LS04 | 5 |
| Storage temperature range | Tstg | -65 |  | 150 | °C |  | 5 |
| Package thermal impedance | θJA |  | 86 |  | °C/W | D package, see Note 2 | 5 |

## CAD (KiCad official)

- Symbol: `SN74LS04D`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `sn74ls04d-etched.step` / `sn74ls04d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74ls04d.step` / `sn74ls04d.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/lit/ds/symlink/sn74ls04d.pdf) (26 pp, sha256 `bedc835335292443`, retrieved 2026-10-23, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/sn74ls04d-datasheet.pdf)