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參數(shù)資料
| 型號(hào)： | IN74LV640 |
| 廠商： | INTEGRAL JOINT STOCK COMPANY |
| 英文描述： | Octal 3-State Inverting Bus Transceiver |
| 中文描述： | 八路三態(tài)反相總線收發(fā)器 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大?。?/td> | 44K |
| 代理商： | IN74LV640 |
IN74LV640
4
AC ELECTRICAL CHARACTERISTICS
(C
L
=50 pF, t
LH
=t
HL
= 6.0 ns, R
L
=1 k )
Guaranteed Limit
-40
°
C
÷
85
°
C
min
-
-
-
25
°
C
-40
°
C
÷
125
°
C
min
-
-
-
Symbol
Parameter
Test
Conditions
V
CC
V
min
-
-
-
max
100
23
14
max
125
28
18
max
140
34
21
Unit
t
PLH
, t
PHL
Propagation
Delay, A to B , B
to A
V
IL
=0 V
V
IH
=V
CC
t
LH
= t
HL
=6.0 ns
L
= 50 pF
V
IL
=0 V
V
IH
=V
CC
t
LH
= t
HL
=6.0 ns
L
= 50 pF
V
IL
=0 V
V
IH
=V
CC
t
LH
= t
HL
=6.0 ns
= 50 pF
V
IL
=0 V
V
IH
=V
CC
t
LH
= t
HL
=6.0 ns
L
= 50 pF
1.2
2.0
*
ns
t
PLZ
, t
PHZ
Propagation
Delay , Direction
or Output
Enable to A or B
1.2
2.0
*
-
-
-
120
30
20
-
-
-
140
37
24
-
-
-
160
43
28
ns
t
PZL
, t
PZH
Propagation
Delay , Direction
or Output
Enable to A or B
1.2
2.0
*
-
-
-
120
28
17
-
-
-
140
35
21
-
-
-
160
43
26
ns
t
TLH
, t
THL
Output
Transition Time,
Any Output
1.2
2.0
*
-
-
-
60
16
10
-
-
-
75
20
13
-
-
-
90
24
15
ns
C
I
Input
Capacitance (Pin
1 or Pin 19)
3.0
-
7.0
-
-
-
-
pF
C
I/O
Input
Capacitance (Pin
2-9 or Pin 11-18)
3.0
-
20.0
-
-
-
-
pF
C
PD
V
I
=0 V or
V
-
50
-
-
-
-
pF
* - V
CC
=3.3
±
0.3V
Figure 1. Switching Waveforms
Figure 2. Test Circuit
0.1
0.1
0.1
t
TLH
0.1
t
THL
0.9
0.9
0.9
0.9
V
1
V
1
V
1
V
1
t
PHL
t
HL
t
PLH
t
LH
B (A)
GND
V
CC
V
CC
GEPULSE
DEVICE
TEST
V
C C
V
I
V
O
C
L
R
L
R
T
Termination resistance R
T
– should be
equal to Z
OUT
of pulse generators
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