These devices contain 4 independent 2-input NAND gates. The open-collector outputs require pull-up resistors to perform correctly. They may be connected to other open-collector outputs to implement active-low wired-OR or active-high wired-AND functions. Open-collector devices are often used to generate higher VOH levels.
The TI SN5401 & SN54LS01 operate over the full military temperature range of -55°C to 125°C. The SN7401 & SN74LS01 operate over 0°C to 70°C.
| Inputs | Output | |
|---|---|---|
| An | Bn | Yn |
| H | H | L |
| L | H | H |
| H | L | H |
| L | L | H |
| Absolute max ratings over operating free-air temperature range | |||
|---|---|---|---|
| Supply Voltage | VCC | '01 & 'LS01 | 7V |
| Input voltage | '01 | 5.5V | |
| 'LS01 | 7V | ||
| Off-state output voltage | 7V | ||
| Operating free-air temperature range | SN54' | -55°C to 125°C | |
| SN74' | 0°C to 70°C | ||