Topic: Digital Electronics
Schottky clamping is resorted in TTL gates
- A. to reduce propagation delay
- B. to increase noise margins
- C. to increase packing density
- D. to increase fan-out
Answer: A. to reduce propagation delay
Explanation: The Schottky diode prevents the BJT from going into deep saturation by diverting excess base current through the Schottky diode and around the BJT. Thus, it reduces the propagation delay i.e. the time needed for the output transistor to switch from the ON state to OFF state is decreased.