HD74AC4024
7-State Binary Counter
Description
The HD74AC4024 is a 4-stage counter.
This device is incremented on the falling edge (negative transition) of the input clock, and all its output is reset to a low level by applying a logical high on its reset input.
Feature
• Outputs Source/Sink 24 mA
Pin Arrangement
Clock
1
14
VCC
Reset
2
13 NC
Q7
3
12 Q1
Q6
4
11 Q2
Q5
5
10 NC
Q4
6 7
9 8
Q3
GND
NC
(Top view)
HD74AC4024
Logic Symbol
C R
Q7
Q1
Q6
Q2
Q5
Q4
Q3
Pin Names
Clock Reset Q1 to Q7 Clock Input (Active Falling Edge) Master Reset Input Outputs
Function Table
Clock L L H H Reset L H L H L H L H H : L : High
voltage level Low
voltage level : Low-to-High Cloc...