21
FUNCTION TABLE
(each gate)
Logic Diagram (SN74)
DUAL 4-INPUT POSITIVE-AND GATES
1
INPUTS
OUTPUT
Y
1A
2
1B
1C
1D
6
A
B
C
D
● Y = A•B•C•D
1Y
4
5
H
L
H
X
L
H
X
X
L
H
X
X
X
L
H
L
L
L
L
● 74AC11xxx: Product Available in Reduced-
Noise Advanced CMOS (11000 Series)
● 74ACT11xxx: Product Available in Reduced-
Noise Advanced CMOS (11000 Series)
9
X
X
X
2A
2B
2C
2D
10
12
13
8
X
X
2Y
X
ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING CONDITIONS
SN74 CD74 CD74
AC
11
ACT
11
LV
3V
LV
5V
PARAMETER
MAX or MIN
LS
ALS
AS
F
UNIT
HC
HC
HCT
ICC
MAX
MAX
MAX
4.4
-0.4
8
2.3
-0.4
8
12
-2
7.3
-1
0.02
-4
0.04
-4
0.04
-4
0.04
-24
24
0.04
-24
24
-
-6
6
0.02
-12
12
mA
mA
mA
IOH
IOL
20
20
4
4
4
SWITCHING CHARACTERISTICS
SN74 CD74 CD74
AC
11
ACT
11
PARAMETER
INPUT
OUTPUT
MAX or MIN
LS
ALS
AS
F
HC
HC
HCT
tPLH
tPHL
A, B, C or D
A, B, C or D
Y
Y
MAX
MAX
15
20
15
10
6
6
5.3
5.5
28
28
33
33
41
41
8.8
6.9
9.8
8.9
LV
3V
LV
5V
PARAMETER
INPUT
OUTPUT
MAX or MIN
tPLH
A, B, C or D
A, B, C or D
Y
Y
MAX
MAX
12
12
8
8
tPHL
UNIT: ns
Logic Diagram (SN74)
25
A
DUAL 4-INPUT
POSITIVE-NOR GATES
WITH STROBE
B
C
OUTPUT
Y
● Y = G (A + B + C + D)
D
G
X
X
GATE 1 OF
SN5423/SN7423
ONLY
FUNCTION TABLE
(each gate)
ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING CONDITIONS
INPUTS
OUTPUT
Y
PARAMETER
MAX or MIN
TTL
UNIT
A
B
C
D
G
H
X
X
X
L
X
H
X
X
L
X
X
H
X
L
X
X
X
H
L
H
H
H
H
X
L
L
L
ICC
MAX
MAX
MAX
19
-0.8
16
mA
mA
mA
IOH
IOL
L
L
H
H
X
X
X
X
SWITCHING CHARACTERISTICS
Expander inputs are open.
H = high level, L = low level, X = irrelevant
PARAMETER
INPUT
OUTPUT
MAX or MIN
TTL
tPLH
A or B
A or B
Y
Y
MAX
MAX
22
15
tPHL
UNIT: ns
246
: OBSOLETED or NOT RECOMMENDED NEW DESIGNS
TI [ TEXAS INSTRUMENTS ]
