Definitions
High = more positive
Low = less positive
Indicator and Qualifier Symbols
| OR function |
| Polarity indicator, shown outside logic symbol. Any marked input or output is active low; any unmarked |
| input or output is active high. |
| (Dynamic indicator) Any market input is |
| unmarked input is level sensitive. |
| (Schmitt trigger) indicates that hysteresis exists in device. |
| |
| |
| Monostable |
t = xSec | Indicates pulse width usually determined by external RC network. |
G | Gate input (a number following G indicates which inputs are gated) |
C | Control input (clock) |
RReset (clear)
SSet
OLD SYMBOL | NEW SYMBOL | NOTES |
Output requires external components to achieve logic state
A
Output changes state rapidly regardless of input rate of change.