ITT - Index of

ITT5493, ITT7493
4-BIT BINARY COUNTERS
TRUTH TABLE
(See Notes 1. 2. and 3)
OUTPUT
COUNT 0 C B A
0 0 0 0 0
1 0 0 0 1
2 0 0 1 0
3 0 0 1 1
I
4 0 1 0 0
5 0 1 0 1
6 0 1 1 0
7 0 1 1 1
•I
I
8 1 0 0 0
9 1 0 0 1
10 1 0 1 0
11 1 0 1 1
12 1 1 0 0
13 1 1 0 1
14 1 1 1 0
15 1 1 1 1
Notes: 1 Qutput A connected to input B
2. To reset all outputs to logical 0 both RO(l)
and RO(2) inputs must be at logical 1.
3. Either (or both) reset inputs ROO) and R O (2)
must be a logical 0 to count.
GND
AOUTPUT
B INPUT B OUTPUT COUTPUT
DOUlPUT
130
1 •
••
Vee
A INPUT
RESET 11 { til
INPUTS (2)
Component values shown are nominal.
3-133