參數(shù)資料
型號: 74ACT251SCQR
英文描述: Low-Power µP Reset Circuits in 3-Pin SC70/SOT23
中文描述: 8聲道,數(shù)字復(fù)接器
文件頁數(shù): 3/8頁
文件大小: 60K
代理商: 74ACT251SCQR
74AC20
3/8
DC SPECIFICATIONS
1) Maximum test duration 2ms, one output loaded at time
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, R
L
= 500
, Input t
r
= t
f
= 3ns)
(*) Voltage range is 3.3V
±
0.3V
(**) Voltage range is 5.0V
±
0.5V
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25
°
C
-40 to 85
°
C
-55 to 125
°
C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
V
IH
High Level Input
Voltage
3.0
4.5
5.5
3.0
4.5
5.5
3.0
V
O
= 0.1 V or
V
CC
-0.1V
2.1
3.15
3.85
1.5
2.25
2.75
1.5
2.25
2.75
2.99
2.1
3.15
3.85
2.1
3.15
3.85
V
V
IL
Low Level Input
Voltage
V
O
= 0.1 V or
V
CC
-0.1V
0.9
1.35
1.65
0.9
1.35
1.65
0.9
1.35
1.65
V
V
OH
High Level Output
Voltage
I
O
=-50
μ
A
I
O
=-50
μ
A
I
O
=-50
μ
A
I
O
=-12 mA
I
O
=-24 mA
I
O
=-24 mA
I
O
=50
μ
A
I
O
=50
μ
A
I
O
=50
μ
A
I
O
=12 mA
I
O
=24 mA
I
O
=24 mA
2.9
2.9
2.9
V
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
4.4
5.4
2.56
3.86
4.86
4.49
5.49
4.4
5.4
2.46
3.76
4.76
4.4
5.4
2.4
3.7
4.7
V
OL
Low Level Output
Voltage
0.002
0.001
0.001
0.1
0.1
0.1
0.36
0.36
0.1
0.1
0.1
0.44
0.44
0.1
0.1
0.1
0.5
0.5
V
5.5
0.36
0.44
0.5
I
I
Input Leakage
Current
Quiescent Supply
Current
5.5
V
I
= V
CC
or GND
±
0.1
±
1
±
1
μ
A
I
CC
5.5
V
I
= V
CC
or GND
2
20
40
μ
A
I
OLD
I
OHD
Dynamic Output
Current (note 1, 2)
5.5
V
OLD
= 1.65 V max
V
OHD
= 3.85 V min
75
-75
50
-50
mA
mA
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25
°
C
-40 to 85
°
C
-55 to 125
°
C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
t
PLH
t
PHL
Propagation Delay
Time
3.3
(*)
5.0
(**)
1.5
5.0
8.5
1.0
10.0
1.0
11.0
ns
1.5
4.0
7.0
1.0
9.0
1.0
10.5
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