The early ECL families used a negative supply, and ground was used as the reference for the gate’s output voltages; this led to better noise immunity. However, PECL became popular because it interfaces more easily to other logic families such as TTL.
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Answer:
The early ECL families used a negative supply, and ground was used as the reference for the gate’s output voltages; this led to better noise immunity. However, PECL became popular because it interfaces more easily to other logic families such as TTL.
Explanation:
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