The 74LS13 contain logic gates/inverters which accept standard TTL input signals and provide standard TTL output levels. They are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. Additionally, they have greater noise margin than conventional inverters. Each circuit contains a Schmitt trigger followed by a Darlington level shifter and a phase splitter driving a TTL totem pole output. The Schmitt trigger uses positive feedback to effectively speed-up slow input transitions, and provide different input threshold voltages for positive and negative-going transitions. This hysteresis between the positive-going and negative-going input thresholds (typically 800 mV) is determined internally by resistor ratios and is essentially insensitive to temperature and supply voltage variations.
Specification:-
| Symbol | Parameter | Min | Nom | Max | Units |
| VCC | Supply Voltage | 4.5 | 5 | 5.5 | V |
| TA | Operating Ambient Temperature Range | -55 | 25 | 125 | °C |
| IOH | Output Current — High | –0.4 | m A | ||
| IOL | High-level Output Current | 8 | m A |
* product image for illustration purposes only. actual product may vary.
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