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Standard Logic Devices (SLD)

Q1:

What is the standard TTL noise margin?

A 5.0 V

B 0.2 V

C 0.8 V

D 0.4 V

ANS:D - 0.4 V

The difference between the tolerable output and input ranges is called the noise margin of the gate.

For TTL gates, the low-level noise margin is the difference between 0.8 volts and 0.5 volts (0.3 volts), while the high-level noise margin is the difference between 2.7 volts and 2 volts (0.7 volts).



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