DM54LS14 [NSC]
Hex Inverters with Schmitt Trigger Inputs; 带施密特触发器输入六路反向器
| 型号： | DM54LS14 |
| 厂家： | 
National Semiconductor |
| 描述： | Hex Inverters with Schmitt Trigger Inputs |
| 文件： | 总6页 (文件大小：125K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
June 1989
54LS14/DM74LS14 Hex Inverters
with Schmitt Trigger Inputs
General Description
This device contains six independent gates each of which
performs the logic INVERT function. Each input has hyster-
esis which increases the noise immunity and transforms a
slowly changing input signal to a fast changing, jitter free
output.
Connection Diagram
Dual-In-Line Package
TL/F/6353–1
Order Number 54LS14DMQB, 54LS14FMQB,
54LS14LMQB, DM74LS14M or DM74LS14N
See NS Package Number E20A, J14A, M14A, N14A or W14B
Function Table
e
Y
A
Input
A
Output
Y
L
H
L
H
e
e
H
L
High Logic Level
Low Logic Level
C
1995 National Semiconductor Corporation
TL/F/6353
RRD-B30M105/Printed in U. S. A.
Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
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.
Supply Voltage
Input Voltage
7V
7V
Operating Free Air Temperature Range
54LS
DM74LS
b
b
a
55 C to 125 C
§
0 C to 70 C
§
a
§
§
a
65 C to 150 C
Storage Temperature Range
§
§
Recommended Operating Conditions
54LS14
DM74LS14
Symbol
Parameter
Units
Min
Nom
Max
Min
Nom
Max
V
V
Supply Voltage
4.5
5
5.5
4.75
5
5.25
V
V
CC
Positive-Going Input
a
T
1.5
1.6
2.0
1.1
1.4
1.6
1.9
1
Threshold Voltage (Note 1)
V
T
Negative-Going Input
b
0.6
0.4
0.8
0.8
0.5
0.4
0.8
0.8
V
Threshold Voltage (Note 1)
HYS
Input Hysteresis (Note 1)
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
V
b
b
0.4
I
I
0.4
mA
mA
OH
OL
4
8
b
T
A
55
125
0
70
C
§
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Typ
Symbol
Parameter
Conditions
Min
Max
Units
(Note 2)
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
54LS
DM74
54LS
DM74
DM74
DM74
2.5
2.7
3.4
3.4
OH
CC
OH
OL
OL
e
Max
IL
e
e
V
OL
Low Level Output
Voltage
V
V
Min, I
Max
0.25
0.35
0.25
0.4
CC
e
Min
IH
0.5
0.4
V
e
e
e
V
V
Min, I
5V, V
4 mA
CC
e
I
Input Current at
V
T
a
b
a
T
CC
I
b
b
0.14
0.18
mA
mA
mA
Positive-Going Threshold
e
e
I
I
Input Current at
V
CC
5V, V
V
T
DM74
b
T
I
I
Negative-Going Threshold
@
Input Current Max
e
e
e
e
e
e
7V
V
CC
V
CC
V
CC
V
CC
V
CC
Max, V
Max, V
Max, V
Max, V
Max
DM74
54LS
I
I
I
I
0.1
20
Input Voltage
e
e
e
10.0V
2.7V
0.4V
I
I
I
High Level Input Current
Low Level Input Current
mA
IH
IL
b
0.4
100
100
mA
b
b
b
b
Short Circuit
54LS
20
20
OS
mA
Output Current
(Note 3)
DM74
e
e
I
I
Supply Current with
Outputs High
V
Max
Max
CCH
CCL
CC
CC
8.6
12
16
21
mA
mA
Supply Current with
Outputs Low
5V.
V
e
Note 1: V
CC
e
e
25 C.
Note 2: All typicals are at V
CC
5V, T
§
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
A
2
e
e
25 C (See Section 1 for Test Waveforms and Output Load)
Switching Characteristics at V
5V and T
§
CC
A
e
R
2 kX
L
e
e
50 pF
Symbol
Parameter
C
L
15 pF
C
L
Units
Min
Max
Min
Max
t
t
Propagation Delay Time
Low to High Level Output
PLH
5
22
8
25
ns
ns
Propagation Delay Time
High to Low Level Output
PHL
5
22
10
33
3
Physical Dimensions inches (millimeters)
Ceramic Leadless Chip Carrier (E)
Order Number 54LS14LMQB
NS Package Number E20A
14-Lead Ceramic Dual-In-Line Package (J)
Order Number 54LS14DMQB
NS Package Number J14A
4
Physical Dimensions inches (millimeters) (Continued)
14-Lead Small Outline Molded Package (M)
Order Number DM74LS14M
NS Package Number M14A
14-Lead Molded Dual-In-Line Package (N)
Order Number DM74LS14N
NS Package Number N14A
5
Physical Dimensions inches (millimeters) (Continued)
14-Lead Ceramic Flat Package (W)
Order Number 54LS14FMQB
NS Package Number W14B
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