Question

Which transistor is best suitable to achieve very fast switching in digital circuits?

(a) Lateral pnp transistor

(b) Schottky transistor

(c) Multi-emitter transistor

(d) NPN transistor

I have been asked this question by my school principal while I was bunking the class.

Question is taken from Active and Passive Components of IC in chapter IC Fabrication of Linear Integrated Circuits

Answer 1

The best transistor for achieving very fast switching in digital circuits is:

(b) Schottky transistor

Schottky transistors are favored for fast switching because they use Schottky diodes instead of regular pn junctions, which results in lower switching times due to reduced charge storage. This makes them highly suitable for high-speed digital applications, such as in logic circuits and other fast-switching environments.