74x75/TTL knowledge check — device capacity How many storage elements (latches/flip-flops) are contained in the 7475 series IC as commonly used in digital labs?

Introduction / Context:The 7475 is a classic TTL device providing multiple level-sensitive bistable elements in a single package. Recognizing the capacity of such parts is helpful when budgeting resources for small counters, registers, or interface latches in educational and prototyping environments.

Given Data / Assumptions:

• Device: 7475 (TTL), often described as a “4-bit bistable latch.”
• Each storage element holds one bit.
• We distinguish between level-sensitive latches (7475) and edge-triggered flip-flops (e.g., 7474).

Concept / Approach:The catalog description “4-bit latch” indicates four independent storage elements in one IC. While some texts casually use “flip-flop” as a generic term, the 7475 is technically a set of transparent latches controlled by an enable signal, not edge-triggered flip-flops. Functionally, however, it provides four 1-bit storage locations.

Step-by-Step Reasoning:

Verification / Alternative check:Vendor datasheets and laboratory manuals list “Quad Latch” in the title block for 7475, confirming the count. Pinouts show repeated latch sections (Q, /Q, D, Enable) four times.

Why Other Options Are Wrong:

• 1 or 2: underestimate the part’s capacity.
• 8 or 16: confuse with octal or larger register devices (e.g., 74HC373/374 are octal).

Common Pitfalls:

• Equating 7475 with 7474 (which is a dual edge-triggered D flip-flop).

Final Answer:4