Buffer gate symbol
Also called Buffer, Driver
The output equals the input, with more drive.
ANSI / IEEE
IEC 60617What the buffer gate symbol means
The output equals the input, with more drive.
ANSI and IEC symbols
Where you see it
Digital electronics, PLC function block diagrams, interlock and safety logic, and cause and effect logic.
Related symbols
Frequently asked questions
What does the buffer gate symbol look like?
On ANSI drawings: A triangle with no circle. In IEC 60617: A rectangle marked 1.
Is the buffer gate symbol the same in IEC and ANSI?
No. A rectangle marked 1.
Where is a buffer gate used?
Digital electronics, PLC function block diagrams, interlock and safety logic, and cause and effect logic.
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