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The SN74LS00N from Texas Instruments is a 74LS-series digital logic IC containing four independent 2-input NAND gates. In positive logic, the output of each gate goes low only when both inputs are high; if either input is low, the output remains high.
The device has TTL-compatible inputs and operates from a nominal 5 V supply, with a recommended range of 4.75–5.25 V. The high-level input threshold is specified from 2 V and the low-level input threshold up to 0.8 V. The inputs can also accept 2.5 V and 3.3 V logic levels.
This version uses a 14-pin PDIP (N) package. The pinout is: 1A pin 1, 1B pin 2, 1Y pin 3; 2A pin 4, 2B pin 5, 2Y pin 6; GND pin 7; 3Y pin 8, 3B pin 9, 3A pin 10; 4Y pin 11, 4B pin 12, 4A pin 13; and VCC pin 14.
Texas Instruments recommends fitting a 0.1 µF bypass capacitor as close as possible to the VCC pin and avoiding floating inputs. The device has limited built-in ESD protection, so standard electrostatic-discharge handling precautions should be observed.
| Brand | Texas Instruments |
| Electrónica Embajadores reference | SMCI74LS00 |
| Manufacturer reference | SN74LS00N |
| Logic series | 74LS |
| Logic function | 2-input NAND, positive logic |
| Number of gates | 4 independent gates |
| Inputs per gate | 2 |
| Input logic | TTL |
| Package | PDIP (N), 14 pins |
| 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) | 2.5 V min.; 3.4 V typ. at VCC min., VIL max. and IOH = −0.4 mA |
| Low-level output voltage (VOL) | 0.35 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) | 0.8 mA typ.; 1.6 mA max. |
| Supply current with outputs low (ICCL) | 2.4 mA typ.; 4.4 mA max. |
| 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 |
| ESD rating, HBM | ±500 V |
| ESD rating, CDM | ±2 000 V |
| RoHS | Yes |
