Schematic Symbols for Digital Integrated Circuits
The following is a guide to the symbols used for digital or logic ICs in this manual. The symbology is based upon American National Standard ANSI Y32.14, Graphic Symbols for Logic Diagrams
Definitions
Logic Element. The part or parts of a logic device symbol having a
Control Block. The part of a logic device symbol to which all logic lines common to a group of logic elements are connected. Lines connected to a control block are control lines.
Function Label. The notation within a logic device symbol that denotes its overall logic function (counter, shift register, multiplexer, and so on)
Line Label. The symbol or abbreviation associated with an output or input line that defines the action of the line.
Indicator Symbol. A symbol associated with an input or output line which defines the active state or special characteristics of the line.
Basic Logic Symbols
D i s t n c t i v e - S h a p e S y m b o l s
A m p l i f i e r / B u f f e r | A N D G a t e | O R G a t e | E X C L U S I V E O R G a t e | S c h m i t t T r i g g e r |
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| G e n e r a l L o g i c E l e m e n t | C o n t r o l B l o c k | C o m n o n C o n t r o l B l o c k | ||||
s h a r i n g c o n t r o l l i n e s a r e w i d e l y s e p a r a t e d , e a c h e l e m e n t w i l l h a v eEla | ||||||||
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NOTE : A n | a s t e r i s k i n d i c a t e s t h e | location o f t h e f u n c t i o n l a b e l . | ||||||
separate | c o n t r o l b l o c k . |
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Figure 6. Schematic Symbols for Digital Integrated Circuits (1 of 7)
General Information 13