Datasheet

5-3
FAST AND LS TTL DATA
SN54/74LS390 • SN54/74LS393
SN54/74LS390 BCD
TRUTH TABLE
(Input on CP
0
; Q
0
CP
1
)
SN54/74LS390 ÷5
TRUTH TABLE
(Input on CP
1
)
SN54/74LS393
TRUTH TABLE
COUNT
OUTPUTS
Q
3
Q
2
Q
1
Q
0
0
1
2
3
4
5
6
7
8
9
L
L
L
L
L
L
L
L
H
H
L
L
H
H
L
L
H
H
L
L
L
H
L
H
L
H
L
H
L
H
L
L
L
L
H
H
H
H
L
L
COUNT
OUTPUTS
Q
3
Q
2
Q
1
0
1
2
3
4
L
L
L
L
H
L
H
L
H
L
L
L
H
H
L
COUNT
OUTPUTS
Q
3
Q
2
Q
1
Q
0
0
1
2
3
4
5
6
7
8
9
10
11
L
L
L
L
H
H
H
H
H
H
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
L
L
L
L
L
L
L
H
H
H
H
12
13
14
15
L
L
L
L
L
L
H
H
L
H
L
H
H
H
H
H
SN54/74LS390 ÷10 (50% @ Q
0
)
TRUTH TABLE
(Input on CP
1
, Q
3
to CP
0
)
COUNT
OUTPUTS
Q
3
Q
2
Q
1
Q
0
0
1
2
3
4
5
6
7
8
9
L
L
L
L
H
L
L
L
L
H
L
H
L
H
L
L
H
L
H
L
L
L
L
L
L
H
H
H
H
H
L
L
H
H
L
L
L
H
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage 54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
T
A
Operating Ambient Temperature Range 54
74
–55
0
25
25
125
70
°C
I
OH
Output Current — High 54, 74 –0.4 mA
I
OL
Output Current — Low 54
74
4.0
8.0
mA