HD74AC393
Dual Modulo-16-Counter
Description
The HD74AC393 contains a pair of high speed 4-stage ripple counters. Each half of the HD74AC393
operates as a modulo-16 binary divider, with the last three stages triggered in a ripple fashion. The flip-
flops are triggered by a High-to-Low transition of their
CP
inputs. Each half of each circuit type has a
Master Reset input which responds to a High signal by forcing all four outputs to the Low state.
Feature
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Outputs Source/Sink 24 mA
Pin Arrangement
CP
1
MR 2
Q
0
3
Q
1
4
Q
2
5
Q
3
6
GND 7
(Top view)
14 V
CC
13
CP
12 MR
11 Q
0
10 Q
1
9 Q
2
8 Q
3
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