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

IEC

IEC astable element

The astable element is marked with G, optionally followed by a sketch of the output waveform. It produces a free-running pulse train. Variants include !G for a synchronously starting astable and G! for one that stops only after completing a pulse, as listed in TI's public overview.

Drawing use: Schematic
Application: Logic & signals
Reference family: IEC / Manufacturer
Form evidence: Rectangular element with the G qualifier and optional waveform. Qualifying-symbol and dependency conventions as explained in TI's public overview of IEEE Std 91-1984, which incorporates IEC 617-12 work. Independent educational drawing; not certified IEC geometry or an IEC database identifier.

A distinction that matters

A monostable produces one pulse per trigger; an astable runs continuously while enabled.

Full reference

CLK-GEN

Symbols

Clock generator

Provides the documented clock signal or signals used by digital circuitry.

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

A distinction that matters

A clock-generator block does not define frequency, jitter or electrical interface without its selected component documentation.

Full reference

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