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參數(shù)資料
| 型號： | DM74LS28 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Quad 2-Input NOR Gate; Package: SOP; No of Pins: 14; Container: Tape & Reel |
| 中文描述： | 四2輸入或非緩沖 |
| 文件頁數(shù)： | 2/3頁 |
| 文件大小： | 31K |
| 代理商： | DM74LS28 |
www.fairchildsemi.com
2
D
Absolute Maximum Ratings
(Note 1)
Note 1:
The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot 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 (unless otherwise noted)
Note 2:
All typicals are at V
CC
=
5V, T
A
=
25
°
C.
Note 3:
Not more than one output should be shorted at a time, and the duration should not exceed one second.
Switching Characteristics
V
CC
=
+
5.0V, T
A
=
+
25
°
C
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Storage Temperature Range
7V
7V
0
°
C to
+
70
°
C
65
°
C to
+
150
°
C
Symbol
Parameter
Min
4.75
2
Nom
5
Max
5.25
Units
V
V
V
mA
mA
°
C
V
CC
V
IH
V
IL
I
OH
I
OL
T
A
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Free Air Operating Temperature
0.7
1.2
24
70
0
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 2)
V
I
V
OH
V
OL
Input Clamp Voltage
HIGH Level Output Voltage
LOW Level Output Voltage
V
CC
=
Min, I
I
=
18 mA
V
CC
=
Min, I
OH
=
Max, V
IL
=
Max
V
CC
=
Min, I
OL
=
Max, V
IH
=
Min
I
OL
=
12 mA, V
CC
=
Min
V
CC
=
Max, V
I
=
7V
V
CC
=
Max, V
I
=
2.7V
V
CC
=
Max, V
I
=
0.4V
V
CC
=
Max (Note 3)
V
CC
=
Max
V
CC
=
Max
1.5
V
V
2.7
0.5
V
0.4
0.1
20
0.4
130
3.6
13.8
I
I
I
IH
I
IL
I
OS
I
CCH
I
CCL
Input Current @ Max Input Voltage
HIGH Level Input Current
mA
μ
A
mA
mA
LOW Level Input Current
Short Circuit Output Current
30
Supply Current with Outputs HIGH
Supply Current with Outputs LOW
mA
mA
R
L
=
2 k
C
L
=
15 pF
Symbol
Parameter
Units
Min
Max
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
20
ns
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
20
ns
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