In electronics packaging, the small-outline (SO / SOIC) package is widely available across popular TTL and CMOS digital logic families as well as many analog IC devices. Evaluate this statement for accuracy.

Difficulty: Easy

Correct Answer: Correct

Explanation:


Introduction / Context:
Surface-mount technology (SMT) displaced many through-hole packages by offering smaller footprints and automated assembly. The small-outline package family (SO/SOIC and variants) is among the most common SMT outlines for digital logic (TTL, CMOS) and analog ICs (op-amps, regulators, interface ICs). This question checks knowledge of package availability rather than a specific device.


Given Data / Assumptions:

  • SO/SOIC is an SMT outline with gull-wing leads.
  • TTL and CMOS logic families include many 74xx/40xx derivatives available in SO.
  • Analog IC catalogs routinely include SO/SOIC versions.


Concept / Approach:
Vendors ship widespread logic gates, flip-flops, counters, and translators in SO/SOIC. Analog lines (op-amps, comparators, ADC/DAC helpers, references) also ship heavily in SO. Thus, stating that SO is available for “most popular TTL and CMOS digital logic and analog IC devices” is reasonable and consistent with mainstream availability.


Step-by-Step Solution:

Identify whether SO/SOIC appears across digital and analog catalogs.Confirm that common gates and families are offered in SO/SOIC.Confirm that standard analog ICs commonly list SO/SOIC options.Conclude the general availability claim is accurate.


Verification / Alternative check:
Cross-vendor parametric searches typically filter by SO/SOIC for both logic and analog categories, reinforcing the statement’s generality.


Why Other Options Are Wrong:

  • Incorrect: Contradicted by broad market availability.
  • Ambiguous as stated / Cannot be determined: The claim is sufficiently general and aligns with industry practice.


Common Pitfalls:
Confusing SO/SOIC with other SMT forms (TSSOP, SSOP, MSOP). While many packages exist, SO remains widespread across device classes.


Final Answer:
Correct

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