Did you know that TTL chips do not output 5 volts? 74LS, 74HC, and 74HCT all have different input and output thresholds. Switching between logic families can be difficult if you are not careful. In this video, learn how different 7400-series logic families compare with input threshold, output voltage, frequency, rise time, and propagation delay: [ Ссылка ]
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0:00 // Essential Logic Families
1:32 // 7400-Logic Overview
2:51 // Measurement Setup
3:39 // Measurement #1 - Input Threshold
5:38 // Measurement #2 - TTL Output
7:36 // Measurement #3 - Frequency
8:21 // Measure #4 - Transition Time
9:31 // Measurement #5 - Propagation Delay
10:32 // Conclusion
