TTL logic families comparison What functional difference distinguishes the 7400 and 7411 TTL integrated circuits?

Introduction / Context:
Classic 74xx TTL parts are often identified by function numbers. Remembering core devices like 7400 and 7411 speeds up schematic reading and parts selection.

Given Data / Assumptions:

• Series: 74xx TTL.
• Part 7400: standard building block.
• Part 7411: three-input gate device.

Concept / Approach:
The 7400 contains four independent 2-input NAND gates in one package. The 7411 contains three independent 3-input AND gates. This difference affects logic design density and required gate count.

Step-by-Step Solution:
Identify 7400: quad 2-input NAND.Identify 7411: triple 3-input AND.Choose the option that matches both facts.

Verification / Alternative check:
Standard pinout tables and TTL datasheets list these functions; many educational kits label them accordingly.

Why Other Options Are Wrong:
Options with four-input NANDs or ANDs do not match 7400/7411 datasheet specs.Options that swap AND/NAND are incorrect functions.

Common Pitfalls:
Confusing 7411 (3-input AND) with 7410 (3-input NAND). The final digit matters.

Final Answer:
7400 has four two-input NAND gates; 7411 has three three-input AND gates