Digital Electronics-Integrated-CircuitLogic Families

Digital Electronics-Integrated-CircuitLogic Families
31. The maximum output voltage recognized as a LOW by a TTL gate is 2.0 V.
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32. An unused input of a NAND gate can be left unconnected, pulled high by a pull-up resistor and tied together with another input and not change the logic output.
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33. ECL gates are noted for their high frequency capability and small output voltage swing.
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34. The logic family with the highest maximum clock frequency is HS-TTL.
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35. The output current capability for a HIGH output condition is called a source current.
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36. The 74XX series TTL operates using saturated switching in which many of the transistors, when conducting, will be in the saturated condition.
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37. The abbreviated designator for a HIGH input voltage is VIH.
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38. A current-sourcing transistor may also be referred to as a pull-down transistor.
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39. Most TTL gates use the totem-pole output arrangement.
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40. The fan-out of CMOS gates is frequency dependent.
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Digital Electronics
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