DM74LS40MX [TI]
LS SERIES, DUAL 4-INPUT NAND GATE, PDSO14, 0.150 INCH, PLASTIC, SOIC-14;
| 型号： | DM74LS40MX |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | LS SERIES, DUAL 4-INPUT NAND GATE, PDSO14, 0.150 INCH, PLASTIC, SOIC-14 输入元件 光电二极管 逻辑集成电路 |
| 文件： | 总4页 (文件大小：93K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
February 1992
DM74LS40
Dual 4-Input NAND Buffer
General Description
This device contains two independent gates each of which
perform the logic NAND function.
Connection Diagrams
Dual-In-Line Package
TL/F/10171–1
Order Number DM74LS40M or DM74LS40N
See NS Package Number M14A or N14A
Function Table
(Each Gate)
Inputs
Outputs
Y
A
B
C
D
H
L
H
X
L
H
X
X
L
H
X
X
X
L
L
H
H
H
H
X
X
X
X
X
X
Logic Diagram (Each Gate)
TL/F/10171–2
Positive Logic
e
e
a
a
a
C D
Y
A
B
C
D
or
Y
A
B
#
#
#
C
1995 National Semiconductor Corporation
TL/F/10171
RRD-B30M105/Printed in U. S. A.
Absolute Maximum Ratings (Note)
Supply Voltage
7V
7V
Note: The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
Input Voltage
Operating Free Air Temperature Range
DM74LS
a
0 C to 70 C
§
§
§
b
a
65 C to 150 C
§
Storage Temperature Range
Recommended Operating Conditions
DM74LS40
Units
Symbol
Parameter
Min
4.75
2
Nom
Max
V
V
V
Supply Voltage
5
5.25
V
V
CC
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
IH
0.8
V
IL
b
I
I
1.2
24
70
mA
mA
OH
OL
T
A
0
C
§
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Typ
Symbol
Parameter
Conditions
Min
Max
Units
(Note 1)
e
e
e b
e
b
1.5
V
V
Input Clamp Voltage
V
Min, I
Min, I
18 mA
Max,
V
V
I
CC
I
High Level Output
Voltage
V
V
OH
CC
OH
2.7
e
Max
IL
e
e
V
OL
Low Level Output
Voltage
V
V
Min, I
Max,
CC
OL
0.5
e
Min
V
IH
e
e
I
12 mA, V
Min
0.4
0.1
20
OL
CC
@
Input Current Max
e
e
I
V
Max, V
7V
I
CC
I
mA
Input Voltage
e
e
e
e
e
I
I
I
High Level Input Current
Low Level Input Current
V
V
V
Max, V
Max, V
Max
2.7V
0.4V
mA
IH
IL
CC
CC
CC
I
b
0.4
mA
I
Short Circuit
OS
b
b
130
30
mA
mA
mA
Output Current
(Note 2)
e
e
e
GND
I
I
Supply Current with
Outputs High
V
Max, V
CCH
CCL
CC
CC
IN
IN
1.0
6.0
e
Supply Current with
Outputs Low
V
Max, V
OPEN
e
e
25 C.
Note 1: All typicals are at V
5V, T
§
Note 2: Note more than one output should be shorted at a time, and the duration should not exceed one second.
CC
A
2
Switching Characteristics
5.0V, T
e a
e a
25 C
V
CC
§
A
e
e
R
2 kX
L
Symbol
Parameter
C
L
15 pF
Units
Min
Max
t
t
Propagation Delay Time
Low to High Level Output
PLH
24
ns
ns
Propagation Delay Time
High to Low Level Output
PHL
24
Physical Dimensions inches (millimeters)
14-Lead Small Outline Molded Package (M)
Order Number DM74LS40M
NS Package Number M14A
3
Physical Dimensions inches (millimeters) (Continued)
14-Lead Molded Dual-In-Line Package (N)
Order Number DM74LS40N
NS Package Number N14A
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to the user.
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support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
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TI
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