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參數(shù)資料
| 型號(hào)： | IN74LV244DW |
| 廠商： | INTEGRAL JOINT STOCK COMPANY |
| 英文描述： | Octal Registered Transceivers With 3-State Outputs 24-SO -40 to 85 |
| 中文描述： | 八路緩沖器/線路驅(qū)動(dòng)器三態(tài) |
| 文件頁(yè)數(shù)： | 4/4頁(yè) |
| 文件大?。?/td> | 157K |
| 代理商： | IN74LV244DW |
IN74LV244
4
AC ELECTRICAL CHARACTERISTICS
(C
L
=50 pF, t
r
=t
f
=6.0 ns)
Symbol
Parameter
Test
V
CC
V
Guaranteed Limit
-40
°
C to
85
°
C
min ma
x
-
-
-
15
-
-
-
-
20
-
-
-
-
20
-
-
-
-
10
-
-
7.0
-
-
50
-
conditions
25
°
C
125
°
C
Unit
min
max min max
t
PHL,
t
PLH
Propagation delay ,
1An to 1Yn, 2An to
2Yn
t
PHZ
t
PLZ
Propagation
OE
1
to 1Yn,
OE
2Yn
t
PZH
t
PZL
Propagation
OE
1
to 1Yn,
OE
2Yn
t
THL,
t
TLH
Output
Time, Any Output
V
I
= 0 V or
V
CC
Figure 1
and 3
V
I
= 0 V or
V
CC
Figure 2
and 4
V
I
= 0 V or
V
CC
Figure 2
and 4
V
I
= 0 V or
V
CC
Figure 1
and 3
V
I
= 0 V or
V
CC
1.2
2.0
*
1.2
2.0
*
1.2
2.0
*
1.2
2.0
*
3.0
100
24
-
-
125
30
19
175
35
24
175
40
25
75
20
13
7.0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
150
36
23
210
41
28
210
48
30
90
24
15
7.0
-
ns
delay,
to
2
140
30
-
-
ns
delay,
to
2
140
32
-
-
ns
Transition
60
16
-
-
ns
C
I
C
PD
Input capacitance
Power
capacitance (per one
channel)
* V
CC
= 3.3
±
0.3 V
pF
pF
dissipation
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
* Includes all probe and jig capacitance
Figure 3. Test Circuit
* Includes all probe and jig capacitance
Figure 4. Test Circuit
DEVICE
UNDER
TEST
OUTPUT
C
L
*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
1 k
C
L
*
TEST POINT
Connect to V
CC
when
testing t
PLZ
and t
PZL
Connect to GND
when
testing t
PHZ
and t
PZH
t
t
t
t
PZH
PHZ
PZL
PLZ
V
V
CC
OH
GND
50%
50%
50%
1OE
2OE
or
1Y or 2Y
n
1Y or 2Y
n
GND
V
V
OL
CC
90%
50%
90%
50%
10%
10%
t
t
t
t
t
t
f
r
PLH
TLH
THL
PHL
V
CC
GND
1A or 2A
n
1Y or 2Y
n
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