Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

AND3

IEEE / ANSI

ANSI three-input AND gate

The three-input AND keeps the familiar flat-backed D outline and simply adds a third input lead on the flat side. All three inputs must be at logic 1 in positive logic for the output to be at logic 1. Packages such as triple three-input AND devices provide this function directly.

Drawing use

Schematic

Application

Logic & signals

Reference family

IEEE / ANSI / Manufacturer

Form evidence

D-shaped AND outline with three inputs. Distinctive-shape form as used in IEEE/ANSI-style schematics and manufacturer data books. Independent educational drawing; exact standard geometry and compliance are not asserted. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

A two-input AND followed by another AND produces the same logic but implies an intermediate net.

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AND

Symbols

AND gate

A logic element whose output is true when all stated positive-logic inputs are true.

Drawing use

Schematic

Application

Logic & signals

Reference family

Manufacturer

A distinction that matters

An AND gate combines logical conditions; it does not specify relay-contact current capacity or a safety integrity level.

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Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.