Each circuit functions as a NAND gate or inverter, but because of the Schmitt action, it has different input threshold levels for positive-going (VT+) and for negative-going (VT-) signals. The hysteresis or backlash, which is the difference between the two threshold levels (VT+ - VT-), is typically 800 millivolts.
These circuits are temperature-compensated and can be triggered from the slowest of input ramps and still give clean, jitter-free output signals.
| Technology family | LS |
| Supply voltage (min) (V) | 4.75 |
| Supply voltage (max) (V) | 5.25 |
| Number of channels | 6 |
| IOL (max) (mA) | 8 |
| IOH (max) (mA) | -0.4 |
| Supply current (max) (µA) | 30000 |
| Input type | Schmitt-Trigger |
| Output type | Push-Pull |
| Features | High speed (tpd 10-50ns), Input clamp diode |
| Rating | Catalog |
| Operating temperature range (°C) | 0 to 70 |
| PDIP (N) | 14 | 181.42 mm² 19.3 x 9.4 |
| SOIC (D) | 14 | 51.9 mm² 8.65 x 6 |
| SOP (NS) | 14 | 79.56 mm² 10.2 x 7.8 |