INDICATOR SYMBOLS (positive logic assumed)
ACTIVE-HIGH inputs and outputs are
indicated by the absence of the
ACTIVE-LOW inputs and outputs ore
d
zl
EDGE-SENSTIVE (Dynamic) inputs are
indicated by the presence of the
dynamic input symbol, D.
-ACTIVE PERIOD
;;-
:k
ACTIVE
PERIOD
1
I-
TRAILING-EDGE ACTIVATED outputs are
indicated by the output delay
symbol, 1. These outputs become
active when the signal thot
initiates the change returns to its
original state (example: the
outputs of a J-K master-slave
flip-flop).
OPEN-COLLECTOR outputs are
indicated by the presence of the
open-co1
I
ector
symbo I,
0.
Figure 6. Schematic Symbols for Digital Integrated Circuits (2 of 7)
14 General Information