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The SN74LS04N from Texas Instruments is a 74LS-series bipolar logic IC containing six independent inverters. Each inverter implements the NOT logic function: a high input produces a low output, while a low input produces a high output.
The device is designed for 5 V logic systems and uses push-pull outputs. Its six independent channels provide six logic inversion functions within a single integrated circuit.
The SN74LS04N version uses a 14-pin PDIP (N) package. The pinout is: 1A pin 1, 1Y pin 2; 2A pin 3, 2Y pin 4; 3A pin 5, 3Y pin 6; GND pin 7; 4Y pin 8, 4A pin 9; 5Y pin 10, 5A pin 11; 6Y pin 12, 6A pin 13; and VCC pin 14.
Unused inputs must be tied to VCC or GND to ensure a defined logic state. The absolute maximum ratings shown in the specifications are device stress limits and must not be treated as normal operating conditions.
| Brand | Texas Instruments |
| Electrónica Embajadores reference | SMCI74LS04 |
| Manufacturer reference | SN74LS04N |
| Logic series | 74LS |
| Logic function | Inverter (NOT) |
| Number of inverters | 6 independent |
| Input type | Bipolar |
| Output type | Push-pull |
| Package | PDIP (N), 14 pins |
| Body dimensions | 19.3 × 9.4 mm |
| Recommended supply voltage (VCC) | 4.75–5.25 V; nominal 5 V |
| High-level input voltage (VIH) | 2 V min. |
| Low-level input voltage (VIL) | 0.8 V max. |
| High-level output current (IOH) | −0.4 mA max. |
| Low-level output current (IOL) | 8 mA max. |
| High-level output voltage (VOH) | 2.7 V min.; 3.4 V typ. at VCC min., VIL max. and IOH = −0.4 mA |
| Low-level output voltage (VOL) | 0.25 V typ.; 0.5 V max. at VCC min., VIH = 2 V and IOL = 8 mA |
| High-level input current (IIH) | 20 µA max. at VI = 2.7 V |
| Low-level input current (IIL) | −0.4 mA max. at VI = 0.4 V |
| Supply current with outputs high (ICCH) | 1.2 mA typ.; 2.4 mA max. at VCC max. and VI = 0 V |
| Supply current with outputs low (ICCL) | 3.6 mA typ.; 6.6 mA max. at VCC max. and VI = 4.5 V |
| Propagation delay tPLH | 9 ns typ.; 15 ns max. |
| Propagation delay tPHL | 10 ns typ.; 15 ns max. |
| Propagation-delay test conditions | VCC = 5 V, TA = 25 °C, RL = 2 kΩ, CL = 15 pF |
| Operating temperature | 0–70 °C |
| Storage temperature | −65–150 °C |
| Supply voltage, absolute maximum | 7 V |
| Input voltage, absolute maximum | 7 V |
| RoHS | Yes |
| REACH | Yes |
