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Learn Electronics Circuit Analysis Puzzle 250

Puzzle 250
What approximate DC voltage would you expect to see at the output of this switching circuit?





Solution 250

This is the diagram of one of the inverters in a TTL 7404 chip. The TTL data book specifies the "high" output should be +2.4 V or greater with a maximum load current of 400 microamperes. Typical out when unloaded is approx imately +3.5 V

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