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参数资料
| 型号： | 74ACT157TTR |
| 英文描述： | Complete, 12-Bit Multiplying DAC |
| 中文描述： | 2，输入数字复接器 |
| 文件页数： | 3/8页 |
| 文件大小： | 58K |
| 代理商： | 74ACT157TTR |
74ACT10
3/8
DC SPECIFICATIONS
1) Maximum test duration 2ms, one output loaded at time
2) Incident wave switching is guaranteed on trasmission 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 5.0V
±
0.5V
CAPACITIVE CHARACTERISTICS
1) C
PD
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
=C
PD
x V
CC
x f
IN
+I
CC
/3 (per gate)
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
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
4.5
V
O
= 0.1 V or
V
CC
-0.1V
V
O
= 0.1 V or
V
CC
-0.1V
I
O
=-50
μ
A
I
O
=-50
μ
A
I
O
=-24 mA
I
O
=-24 mA
I
O
=50
μ
A
I
O
=50
μ
A
I
O
=24 mA
I
O
=24 mA
2.0
2.0
1.5
1.5
1.5
1.5
4.49
5.49
2.0
2.0
2.0
2.0
V
V
IL
Low Level Input
Voltage
0.8
0.8
0.8
0.8
0.8
0.8
V
V
OH
High Level Output
Voltage
4.4
5.4
3.86
4.86
4.4
5.4
3.76
4.76
4.4
5.4
3.7
4.7
V
V
OL
Low Level Output
Voltage
0.001
0.1
0.1
0.1
5.5
4.5
5.5
0.001
0.1
0.36
0.36
0.1
0.44
0.44
0.1
0.5
0.5
I
I
Input Leakage Cur-
rent
Max I
CC
/Input
Quiescent Supply
Current
5.5
V
I
= V
CC
or GND
±
0.1
±
1
±
1
μ
A
I
CCT
I
CC
5.5
V
I
= V
CC
- 2.1V
0.6
1.5
1.6
mA
5.5
V
I
= V
CC
or GND
4
40
80
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
5.0
(*)
1.5
4.5
9.0
1.0
10.0
1.0
10.0
ns
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.
C
IN
C
PD
Input Capacitance
5.0
4.0
pF
Power Dissipation
Capacitance (note
1)
5.0
f
IN
= 10MHz
37.0
pF
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