54LS14/DM74LS14 are dual-input six-channel logic inverters with Schmitt trigger inputs. The input has a hysteresis effect, which increases the noise immunity and transforms a slowly changing input signal into a fast-changing, jitter-free output
This document provides a technical overview of the 54LS14 and DM74LS14 Hex Inverters with Schmitt Trigger Inputs. The device contains six independent gates that perform the logic INVERT function, featuring hysteresis to increase noise immunity and transform slowly changing input signals into fast, jitter-free outputs. It includes connection diagrams and function tables for the dual-in-line package.
| Supply Voltage | 4.5V to 5.5V (54LS), 4.75V to 5.25V (DM74LS) |
|---|---|
| Operating Temperature Range | -55°C to +125°C (54LS), 0°C to +70°C (DM74LS) |
| Input Hysteresis | 0.4V to 0.8V |
| High Level Output Voltage | 2.5V to 3.4V |
| Low Level Output Voltage | 0.25V to 0.4V |
| Propagation Delay Time | 5ns to 22ns (CL=15pF), 8ns to 25ns (CL=50pF) |
The device contains six independent gates each of which performs the logic INVERT function.
Each input has hysteresis which increases the noise immunity and transforms a slowly changing input signal to a fast changing, jitter free output.
The absolute maximum rating for supply voltage is 7V.