參數(shù)資料
型號(hào)： CD74ACT251
廠商： Texas Instruments, Inc.
英文描述： 8-Input Multiplexer, Three-State
中文描述： 8輸入多路復(fù)用器，三態(tài)
文件頁(yè)數(shù)： 3/8頁(yè)
文件大?。?/td> 38K
代理商： CD74ACT251
3
Absolute Maximum Ratings
Thermal Information
DC Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6V
DC Input Diode Current, I
IK
For V
I
< -0.5V or V
I
> V
CC
+ 0.5V
. . . . . . . . . . . . . . . . . . . . . .±
20mA
DC Output Diode Current, I
OK
For V
O
< -0.5V or V
O
> V
CC
+ 0.5V
. . . . . . . . . . . . . . . . . . . .±
50mA
DC Output Source or Sink Current per Output Pin, I
O
For V
O
> -0.5V or V
O
< V
CC
+ 0.5V
. . . . . . . . . . . . . . . . . . . .±
50mA
DC V
CC
or Ground Current, I
CC or
I
GND
(Note 3)
. . . . . . . . .±
100mA
Operating Conditions
Temperature Range, T
A
. . . . . . . . . . . . . . . . . . . . . . -55
o
C to 125
o
C
Supply Voltage Range, V
CC
(Note 4)
AC Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V
ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, V
I
, V
O
. . . . . . . . . . . . . . . . . 0V to V
CC
Input Rise and Fall Slew Rate, dt/dv
AC Types, 1.5V to 3V . . . . . . . . . . . . . . . . . . . . . . . . . 50ns (Max)
AC Types, 3.6V to 5.5V. . . . . . . . . . . . . . . . . . . . . . . . 20ns (Max)
ACT Types, 4.5V to 5.5V. . . . . . . . . . . . . . . . . . . . . . . 10ns (Max)
Thermal Resistance (Typical, Note 5)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . .-65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . . 300
o
C
θ
JA
(
o
C/W)
___
___
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
3. For up to 4 outputs per device, add
±
25mA for each additional output.
4. Unless otherwise specified, all voltages are referenced to ground.
5.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
DC Electrical Specifications
PARAMETER
SYMBOL
TEST
CONDITIONS
V
CC
(V)
25
o
C
-40
o
C TO
85
o
C
-55
o
C TO
125
o
C
UNITS
V
I
(V)
I
O
(mA)
MIN
MAX
MIN
MAX
MIN
MAX
AC TYPES
High Level Input Voltage
V
IH
-
-
1.5
1.2
-
1.2
-
1.2
-
V
3
2.1
-
2.1
-
2.1
-
V
5.5
3.85
-
3.85
-
3.85
-
V
Low Level Input Voltage
V
IL
-
-
1.5
-
0.3
-
0.3
-
0.3
V
3
-
0.9
-
0.9
-
0.9
V
5.5
-
1.65
-
1.65
-
1.65
V
High Level Output Voltage
V
OH
V
IH
or V
IL
-0.05
1.5
1.4
-
1.4
-
1.4
-
V
-0.05
3
2.9
-
2.9
-
2.9
-
V
-0.05
4.5
4.4
-
4.4
-
4.4
-
V
-4
3
2.58
-
2.48
-
2.4
-
V
-24
4.5
3.94
-
3.8
-
3.7
-
V
-75
(Note 6, 7)
5.5
-
-
3.85
-
-
-
V
-50
(Note 6, 7)
5.5
-
-
-
-
3.85
-
V
CD74AC251, CD74ACT251
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