Question

Introducing Schottky diode between base and collector of TTL output transistor:

• A. Increases speed by inhibiting saturation
• B. Decreases speed by inhibiting saturation
• C. Increases fan-out by enabling saturation
• D. Increases speed by enabling saturation

Hint:

Schottky TTL = Fast switching by preventing deep saturation of output transistors.

Answer 1

The Correct Option is A

Schottky diode prevents the transistor from entering deep saturation. This reduces turn-off time, hence improves switching speed.