Updated: Dec 9, 2025 | Source: 2024-2028 Question Pool | Topic: E6C
E6C04E6C

Which of the following is an advantage of BiCMOS logic?

PreviousNext

Deep Dive: E6C04

The correct answer is C: It has the high input impedance of CMOS and the low output impedance of bipolar transistors. Which of the following is an advantage of BiCMOS logic is that it has the high input impedance of CMOS and the low output impedance of bipolar transistors. BiCMOS combines CMOS and bipolar advantages. For amateur radio operators, this is important for digital circuits. Understanding this helps when selecting logic families.

Why Other Answers Are Wrong

Option A: Incorrect. Simplicity resulting in less expensive devices isn't the advantage - BiCMOS has high input impedance and low output impedance. Simplicity isn't the advantage. Option B: Incorrect. Immune to electrostatic damage isn't the advantage - BiCMOS has high input impedance and low output impedance. ESD immunity isn't the advantage. Option D: Incorrect. Since A and B are not correct, 'all of the above' cannot be correct. Only high input impedance and low output impedance is the advantage.

Exam Tip

BiCMOS advantage = high input impedance of CMOS and low output impedance of bipolar. Think 'B'iCMOS = 'B'est of 'B'oth (CMOS input, bipolar output). BiCMOS combines CMOS and bipolar advantages. Not simplicity, not ESD immunity - just high input impedance and low output impedance.

Memory Aid

BiCMOS advantage = high input impedance of CMOS and low output impedance of bipolar. Think 'B'iCMOS = 'B'est of 'B'oth. BiCMOS combines CMOS and bipolar advantages. Important for digital circuits.

Real-World Example

BiCMOS logic: An advantage is that it has the high input impedance of CMOS and the low output impedance of bipolar transistors. This combines the best of both technologies. This is the advantage - high input impedance and low output impedance.

Source & Coverage

Question Pool: 2024-2028 Question Pool

Subelement: E6C

Reference: 2024-2028 Question Pool · E6 - Circuit Components

Key Concepts

Advantage BiCMOS logic High input impedance of CMOS Low output impedance of bipolar transistors

Verified Content

Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E6C topic.