Side-by-side reference

Understand the difference.

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

First referenceCompare with

IEEE / ANSI

ANSI cross-coupled NOR latch

Two NOR gates with each output fed back to an input of the other form an SR latch with active-high inputs. A high on set drives Q high, a high on reset drives Q low, and both low holds the state. Both high forces both outputs low and is normally treated as invalid.

Drawing use: Schematic
Application: Logic & signals
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Two NOR outlines with each output fed back to the other gate's input. 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

The cross-coupled NAND latch responds to active-low inputs.

Full reference

SR-LATCH

Symbols

Set-reset latch

Retains a digital state that is changed by the defined set or reset input conditions.

Drawing use: Schematic
Application: Logic & signals
Reference family: Manufacturer

A distinction that matters

Active-high and active-low SR implementations have different input conventions; a bare SR label does not resolve simultaneous-input behaviour.

Full reference

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