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August 2022 StudentZone Quiz Solution

Question 1:

The output circuitry of a typical TTL logic gate is commonly referred to a totem-pole output because the two output transistors are stacked one above the other like carvings on a totem pole. Is a gate circuit with a totem-pole output stage able to source load current, sink load current, or do both?

Answer 1:

The totem-pole output circuitry provides the ability to both actively source or sink current, being useful for driving capacitive loads.