© 2000 Fairchild Semiconductor Corporation
DS008619
www.fairchildsemi.com
July 1985
Revised March 2000
DM74AS1804 Hex 2-I
nput NAND
Dri
ver
DM74AS1804
Hex 2-Input NAND Driver
General Description
These devices contain six independent 2-Input drivers
each of which performs the logic NAND function. The
DM74AS1804 is equivalent to the DM74AS804B but the
supply voltage and ground pins are centered in the pack-
age. This positioning of the supply voltage and ground pins
reduce the lead inductance of these pins. This reduction of
lead inductance will minimize noise generated onto either
the supply voltage or ground bus which is significant in high
current switching applications.
Features
s
Switching specifications at 50 pF
s
Switching specifications guaranteed over full tempera-
ture and V
CC
range
s
Advanced oxide-isolated, ion-implanted Schottky TTL
process
s
Centered V
CC
and GND configuration provides minimum
lead inductance for high current switching applications
s
High capacitive drive capability
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code.
Connection Diagram
Function Table
H
=
HIGH Logic Level
L
=
LOW Logic Level
Order Number
Package Number
Package Description
DM74AS1804WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74AS1804N
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Y
=
A * B
INPUTS
OUTPUT
A
B
Y
L
L
H
L
H
H
H
L
H
H
H
L
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2
D
M
74AS1804
Absolute Maximum Ratings
(Note 1)
Note 1: The "Absolute Maximum Ratings" are those values beyond which
the safety of the device can not be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The "Recommended Operating Conditions" table will define the conditions
for actual device operation.
Recommended Operating Conditions
Electrical Characteristics
over recommended operating free air temperature range
Switching Characteristics
over recommended operating free air temperature range
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature
0
°
C to
+
70
°
C
Storage Temperature Range
-
65
°
C to
+
150
°
C
Typical
JA
N Package
58.3
°
C/W
M Package
154.0
°
C/W
Symbol
Parameter
Min
Nom
Max
Units
V
CC
Supply Voltage
4.5
5
5.5
V
V
IH
HIGH Level Input Voltage
2
V
V
IL
LOW Level Input Voltage
0.8
V
I
OH
HIGH Level Output Current
-
48
mA
I
OL
LOW Level Output Current
48
mA
T
A
Operating Free Air Temperature Range
0
70
°
C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
IK
Input Clamp Voltage
V
CC
=
4.5V, I
I
=
-
18 mA
-
1.2
V
V
OH
HIGH Level
I
OH
=
-
2 mA, V
CC
=
4.5V to 5.5V
V
CC
-
2
Output Voltage
I
OH
=
-
3 mA, V
CC
=
4.5V
2.4
3.2
V
I
OH
=
Max, V
CC
=
4.5V
2
V
OL
LOW Level Output Voltage
V
CC
=
4.5V, I
OL
=
Max, V
IH
=
2V
0.5
V
I
I
Input Current at Maximum Input Voltage
V
CC
=
5.5V, V
I
=
7V
100
µ
A
I
IH
HIGH Level Input Current
V
CC
=
5.5V, V
I
=
2.7V
20
µ
A
I
IL
LOW Level Input Current
V
CC
=
5.5V, V
I
=
0.4V
-
500
µ
A
I
O
Output Drive Current
V
CC
=
5.5V, V
O
=
2.25V
-
50
-
135
-
200
mA
I
CCH
Supply Current with Outputs HIGH
V
CC
=
5.5V
3.5
5
mA
I
CCL
Supply Current with Outputs LOW
V
CC
=
5.5V
16
27
mA
Symbol
Parameter
Conditions
Min
Max
Units
t
PLH
Propagation Delay Time
V
CC
=
4.5V to 5.5V
1
4
ns
LOW-to-HIGH Level Output
R
L
=
500
t
PHL
Propagation Delay Time
C
L
=
50 pF
1
4
ns
HIGH-to-LOW Level Output
3
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DM74AS1804
Physical Dimensions
inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Package Number M20B
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4
DM74AS1804 Hex 2-I
nput NAND
Dri
ver
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N20A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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