54AC 74AC20 Dual 4-Input NAND Gate
February 1993
54AC 74AC20
Dual 4-Input NAND Gate
General Description
The ’AC20 contains four 4-input NAND gates
Features
Y
Y
Y
I
CC
reduced by 50%
Outputs source sink 24 mA
Standard Military Drawing (SMD)
’AC20 5962-87613
Logic Symbol
Connection Diagrams
Pin Assignment
for DIP Flatpak and SOIC
Pin Assignment
for LCC
IEEE IEC
TL F 9918 – 3
TL F 9918 – 2
TL F 9918–1
Pin Names
A
n
B
n
C
n
D
n
O
n
Description
Inputs
Outputs
FACT
TM
is a trademark of National Semiconductor Corporation
C
1995 National Semiconductor Corporation
TL F 9918
RRD-B30M75 Printed in U S A
Absolute Maximum Ratings
(Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage (V
CC
)
DC Input Diode Current (I
IK
)
V
I
e b
0 5V
V
I
e
V
CC
a
0 5V
DC Input Voltage (V
I
)
DC Output Diode Current (I
OK
)
V
O
e b
0 5V
V
O
e
V
CC
a
0 5V
DC Output Voltage (V
O
)
DC Output Source
or Sink Current (I
O
)
DC V
CC
or Ground Current
per Output Pin (I
CC
or I
GND
)
Storage Temperature (T
STG
)
Junction Temperature (T
J
)
CDIP
PDIP
b
0 5V to
a
7 0V
b
20 mA
a
20 mA
b
0 5V to V
CC
a
0 5V
b
20 mA
a
20 mA
b
0 5V to V
CC
a
0 5V
g
50 mA
g
50 mA
Recommended Operating
Conditions
Supply Voltage (V
CC
)
’AC
Input Voltage (V
I
)
Output Voltage (V
O
)
Operating Temperature (T
A
)
74AC
54AC
Minimum Input Edge Rate (DV
Dt)
’AC Devices
V
IN
from 30% to 70% of V
CC
V
CC
3 3V 4 5V 5 5V
2 0V to 6 0V
0V to V
CC
0V to V
CC
b
40 C to
a
85 C
b
55 C to
a
125 C
125 mV ns
b
65 C to
a
150 C
175 C
140 C
Note 1
Absolute maximum ratings are those values beyond which damage
to the device may occur The databook specifications should be met without
exception to ensure that the system design is reliable over its power supply
temperature and output input loading variables National does not recom-
mend operation of FACT
TM
circuits outside databook specifications
DC Characteristics for ’AC Family Devices
74AC
Symbol
Parameter
V
CC
(V)
T
A
e a
25 C
Typ
V
IH
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
30
45
55
30
45
55
30
45
55
30
45
55
V
OL
Maximum Low Level
Output Voltage
30
45
55
30
45
55
I
IN
Maximum Input
Leakage Current
55
0 002
0 001
0 001
15
2 25
2 75
15
2 25
2 75
2 99
4 49
5 49
21
3 15
3 85
09
1 35
1 65
29
44
54
2 56
3 86
4 86
01
01
01
0 36
0 36
0 36
g
0 1
54AC
T
A
e
b
55 C to
a
125 C
74AC
T
A
e
b
40 C to
a
85 C
Units
Conditions
Guaranteed Limits
21
3 15
3 85
09
1 35
1 65
29
44
54
24
37
47
01
01
01
05
05
05
g
1 0
21
3 15
3 85
09
1 35
1 65
29
44
54
2 46
3 76
4 76
01
01
01
0 44
0 44
0 44
g
1 0
V
V
OUT
e
0 1V
or V
CC
b
0 1V
V
OUT
e
0 1V
or V
CC
b
0 1V
I
OUT
e b
50
mA
V
IL
V
V
OH
V
V
IN
e
V
IL
or V
IH
b
12 mA
b
24 mA
I
OH
b
24 mA
I
OUT
e
50
mA
V
V
IN
e
V
IL
or V
IH
12 mA
I
OL
24 mA
24 mA
V
I
e
V
CC
GND
V
V
mA
All outputs loaded thresholds on input associated with output under test
2
DC Characteristics for ’AC Family Devices
(Continued)
74AC
Symbol
Parameter
V
CC
(V)
T
A
e a
25 C
Typ
I
OLD
I
OHD
I
CC
Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
55
55
55
20
54AC
T
A
e
b
55 C to
a
125 C
74AC
T
A
e
b
40 C to
a
85 C
Units
Conditions
Guaranteed Limits
50
b
50
75
b
75
mA
mA
mA
V
OLD
e
1 65V Max
V
OHD
e
3 85V Min
V
IN
e
V
CC
or GND
40 0
20 0
Maximum test duration 2 0 ms one output loaded at a time
Note
I
IN
and I
CC
I
CC
for 54AC
3 0V are guaranteed to be less than or equal to the respective limit
25 C is identical to 74AC
25 C
5 5V V
CC
AC Electrical Characteristics
74AC
Symbol
Parameter
V
CC
(V)
Min
t
PLH
t
PHL
Propagation Delay
Propagation Delay
33
50
33
50
20
15
15
15
T
A
e a
25 C
C
L
e
50 pF
Typ
60
50
50
40
Max
85
70
70
60
54AC
T
A
e b
55 C
to
a
125 C
C
L
e
50 pF
Min
10
10
10
10
Max
11 0
85
10 5
70
74AC
T
A
e b
40 C
to
a
85 C
C
L
e
50 pF
Min
15
10
10
10
Max
10 0
80
90
70
ns
ns
Units
Voltage Range 3 3 is 3 3V
g
0 3V
Voltage Range 5 0 is 5 0V
g
0 5V
Capacitance
Symbol
C
IN
C
PD
Parameter
Input Capacitance
Power Dissipation
Capacitance
Typ
45
40 0
Units
pF
pF
Conditions
V
CC
e
OPEN
V
CC
e
5 0V
Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows
74ACT
Temperature Range Family
74AC
e
Commercial
54AC
e
Military
Device Type
Package Code
P
e
Plastic DIP
D
e
Ceramic DIP
F
e
Flatpak
L
e
Leadless Ceramic Chip Carrier (LCC)
S
e
Small Outline (SOIC)
20
P
C
QR
Special Variations
X
e
Devices shipped in 13 reels
QR
e
Commercial grade device with
burn-in
QB
e
Military grade device with
environmental and burn-in
processing shipped in tubes
Temperature Range
C
e
Commercial (
b
40 C to
a
85 C)
M
e
Military (
b
55 C to
a
125 C)
3
Physical Dimensions
inches (millimeters)
20 Terminal Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
14 Lead Ceramic Dual-In-Line Package (D)
NS Package Number J14A
4
Physical Dimensions
inches (millimeters) (Continued)
14 Lead Small Outline Integrated Circuit (S)
NS Package Number M14A
14 Lead Plastic Dual-In-Line Package (P)
NS Package Number N14A
5
