54AC20.pdf
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Pobierz
July 1998
54AC20
Dual 4-Input NAND Gate
General Description
The ’AC20 contains four 4-input NAND gates.
n
Outputs source/sink 24 mA
n
Standard Military Drawing (SMD)
n
’AC20: 5962-87613
Features
n
I
CC
reduced by 50%
Logic Symbol
IEEE/IEC
DS100264-1
Pin Names
Description
A
n
,B
n
,C
n
,D
n
Inputs
O
n
Outputs
Connection Diagrams
Pin Assignment
for DIP and Flatpak
Pin Assignment
for LCC
DS100264-3
DS100264-2
FACT
™
is a trademark of Fairchild Semiconductor Corporation.
www.national.com
© 1998 National Semiconductor Corporation
DS100264
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
)
Junction Temperature (T
J
)
CDIP
175˚C
Recommended Operating
Conditions
Supply Voltage (V
CC
)
’AC
−0.5V to +7.0V
DC Input Diode Current (I
IK
)
V
I
=
−0.5V
−20 mA
2.0V to 6.0V
V
I
=
V
CC
+ 0.5V
+20 mA
Input Voltage (V
I
)
0VtoV
CC
DC Input Voltage (V
I
)
−0.5V to V
CC
+ 0.5V
Output Voltage (V
O
)
0VtoV
CC
DC Output Diode Current (I
OK
)
V
O
=
−0.5V
Operating Temperature (T
A
)
54AC
−20 mA
−55˚C to +125˚C
V
O
=
V
CC
+ 0.5V
+20 mA
Minimum Input Edge Rate (
D
V/
D
t)
DC Output Voltage (V
O
)
−0.5V to V
CC
+ 0.5V
’AC Devices
V
IN
from 30% to 70% of V
CC
V
CC
@
3.3V, 4.5V, 5.5V 125 mV/ns
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
™
circuits outside databook specifications.
DC Characteristics for ’AC Family Devices
54AC
DC Output Source
or Sink Current (I
O
)
±
50 mA
DC V
CC
or Ground Current
per Output Pin (I
CC
or I
GND
)
±
50 mA
Storage Temperature (T
STG
)
−65˚C to +150˚C
T
A
=
Symbol
Parameter
V
CC
Units
Conditions
(V)
−55˚C to
+125˚C
Guaranteed
Limits
V
OUT
=
0.1V
V
IH
Minimum High Level
3.0
2.1
Input Voltage
4.5
3.15
V
or V
CC
− 0.1V
5.5
3.85
V
OUT
=
0.1V
V
IL
Maximum Low Level
3.0
0.9
Input Voltage
4.5
1.35
V
or V
CC
− 0.1V
5.5
1.65
I
OUT
=
−50 µA
V
OH
Minimum High Level
3.0
2.9
Output Voltage
4.5
4.4
V
5.5
5.4
(Note 2)
V
IN
=
V
IL
or V
IH
3.0
2.4
I
OH
= −12 mA
4.5
3.7
V
I
OH
= −24 mA
5.5
4.7
I
OH
= −24 mA
I
OUT
=
50 µA
V
OL
Maximum Low Level
3.0
0.1
Output Voltage
4.5
0.1
V
5.5
0.1
(Note 2)
V
IN
=
V
IL
or V
IH
3.0
0.5
I
OL
=12mA
4.5
0.5
V
I
OL
=24mA
5.5
0.5
I
OL
=24mA
±
1.0
V
I
=
V
CC
, GND
I
IN
Maximum Input
5.5
µA
Leakage Current
V
OLD
=
1.65V Max
I
OLD
Minimum Dynamic
Output Current (Note 3)
5.5
50
mA
V
OHD
=
3.85V Min
I
OHD
5.5
−50
mA
www.national.com
2
DC Characteristics for ’AC Family Devices
(Continued)
54AC
T
A
=
Symbol
Parameter
V
CC
Units
Conditions
(V)
−55˚C to
+125˚C
Guaranteed
Limits
V
IN
=
V
CC
I
CC
Maximum Quiescent
5.5
40.0
µA
Supply Current
or GND
Note 2:
All outputs loaded; thresholds on input associated with output under test.
Note 3:
Maximum test duration 2.0 ms, one output loaded at a time.
Note 4:
I
IN
and I
CC
@
3.0V are guaranteed to be less than or equal to the respective limit
@
5.5V V
CC
.
I
CC
for 54AC
@
25˚C is identical to 74AC
@
25˚C.
AC Electrical Characteristics
54AC
T
A
=
−55˚C
V
CC
Symbol
Parameter
(V)
to +125˚C
Units
(Note 5)
C
L
= 50 pF
Min
Max
t
PLH
Propagation Delay
3.3
1.0
11.0
ns
5.0
1.0
8.5
t
PHL
Propagation Delay
3.3
1.0
10.0
ns
5.0
1.0
7.0
Note 5:
Voltage Range 3.3 is 3.3V
±
0.3V
Voltage Range 5.0 is 5.0V
±
0.5V
Capacitance
Symbol
Parameter
Typ
Units
Conditions
C
IN
Input Capacitance
4.5
pF
V
CC
= OPEN
C
PD
Power Dissipation
40.0
pF
V
CC
= 5.0V
Capacitance
3
www.national.com
4
Physical Dimensions
inches (millimeters) unless otherwise noted
20 Terminal Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
14 Lead Ceramic Dual-In-Line Package (D)
NS Package Number J14A
5
www.national.com
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