Question

The full form of PTL is _____________

(a) Pull transistor logic

(b) Push transistor logic

(c) Pass transistor logic

(d) Post Transistor Logic

I had been asked this question at a job interview.

Query is from BiCMOS Logic Circuits in chapter Logic Families of Digital Circuits

Answer 1

The correct option is (c) Pass transistor logic

Easiest explanation: The full form of PTL is “pass transistor logic”. It combines different logic families to design an integrated circuit. Thus, it reduces the number of transistors used by scraping off the unnecessary transistors.