SN74LS373 SN74LS374
LOGIC DIAGRAMS
SN74LS373
3
4
7
8
13
14
17
18
D
0
D
LATCH
ENABLE
LE
11
OE
Q
G
D
1
D
Q
G
D
2
D
Q
G
D
3
D
Q
G
D
4
D
Q
G
D
5
D
Q
G
D
6
D
Q
G
D
7
D
Q
G
V
CC
= PIN 20
GND = PIN 10
= PIN NUMBERS
1
O
0
2
5
O
1
6
O
2
9
O
3
12
O
4
15
O
5
16
O
6
19
O
7
SN74LS374
3
11
4
7
8
13
14
17
18
D
0
CP D
Q Q
CP D
Q Q
D
1
CP D
Q Q
D
2
CP D
Q Q
D
3
CP D
Q Q
D
4
CP D
Q Q
D
5
CP D
Q Q
D
6
CP D
Q Q
D
7
CP
OE
1
2
O
0
5
O
1
6
O
2
9
O
3
12
O
4
15
O
5
16
O
6
19
O
7
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
Symbol
V
IH
V
IL
V
IK
V
OH
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
2.4
– 0.65
3.1
0.25
V
O
OL
I
OZH
I
OZL
I
IH
I
IL
I
OS
I
CC
Output LOW Voltage
0.35
Output Off Current HIGH
Output Off Current LOW
Input HIGH Current
Input LOW Current
Short Circuit Current (Note 1)
Power Supply Current
– 30
0.5
20
– 20
20
0.1
– 0.4
– 130
40
V
µA
µA
µA
mA
mA
mA
mA
I
OL
= 24 mA
0.4
Min
2.0
0.8
– 1.5
Typ
Max
Unit
V
V
V
V
V
Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
Guaranteed Input LOW Voltage for
All Inputs
V
CC
= MIN, I
IN
= – 18 mA
V
CC
= MIN, I
OH
= MAX, V
IN
= V
IH
or V
IL
per Truth Table
I
OL
= 12 mA
V
CC
= V
CC
MIN,
V
IN
= V
IL
or V
IH
per Truth Table
V
CC
= MAX, V
OUT
= 2.7 V
V
CC
= MAX, V
OUT
= 0.4 V
V
CC
= MAX, V
IN
= 2.7 V
V
CC
= MAX, V
IN
= 7.0 V
V
CC
= MAX, V
IN
= 0.4 V
V
CC
= MAX
V
CC
= MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
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