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參數(shù)資料
| 型號： | LT1485 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Differential Bus Transceiver |
| 中文描述： | 差分總線收發(fā)器 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 257K |
| 代理商： | LT1485 |
3
LTC1485
SYMBOL
t
PLH
PARAMETER
Driver Input to Output
CONDITIONS
R
DIFF
= 54
, C
L1
= C
L2
= 100pF
(Figures 2, 5)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF
(Figures 2, 5)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF
(Figures 2, 5)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF
(Figures 2, 5)
C
L
= 100pF (Figures 4, 6) S2 Closed
C
L
= 100pF (Figures 4, 6) S1 Closed
C
L
= 15pF (Figures 4, 6) S1 Closed
C
L
= 15pF (Figures 4, 6) S2 Closed
R
DIFF
= 54
, C
L1
= C
L2
= 100pF (Figures 2, 7)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF (Figures 2, 7)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF (Figures 2, 7)
MIN
10
TYP
30
MAX
50
UNITS
G
ns
t
PHL
Driver Input to Output
G
10
30
50
ns
t
SKEW
Driver Output to Output
G
4
10
ns
t
r
, t
f
Driver Rise or Fall Time
G
5
15
25
ns
t
ZH
t
ZL
t
LZ
t
HZ
t
PLH
t
PHL
t
SKEW
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
Receiver Input to Output
Receiver Input to Output
| t
PLH
– t
PHL
|
Differential Receiver Skew
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
G
40
40
40
40
25
30
5
70
70
70
70
50
55
15
ns
ns
ns
ns
ns
ns
ns
G
G
G
G
15
20
G
G
t
ZL
t
ZH
t
LZ
t
HZ
C
L
= 15pF (Figures 3, 8) S1 Closed
C
L
= 15pF (Figures 3, 8) S2 Closed
C
L
= 15pF (Figures 3, 8) S1 Closed
C
L
= 15pF (Figures 3, 8) S2 Closed
G
30
30
30
30
45
45
45
45
ns
ns
ns
ns
G
G
G
S
V
CC
= 5V (Notes 2, 3), unless otherwise noted.
U
G C
HARA TERISTICS
WITCHI
The
G
denotes specifications which apply over the operating temperature
range.
Note 1:
Absolute Maximum Ratings are those values beyond which the
safety of the device cannot be guaranteed.
Note 2:
All currents into device pins are positive. All currents out of device
pins are negative. All voltages are referenced to device ground unless
otherwise specified.
Note 3:
All typicals are given for V
CC
= 5V and T
A
= 25
°
C.
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Receiver Output High Voltage vs
Temperature
Receiver Output Low Voltage vs
Output Current
Receiver Output High Voltage vs
Output Current
OUTPUT VOLTAGE (V)
0
0
O
16
1.0
1485 G01
8
0.5
1.5
24
32
2.0
4
12
20
28
36
T
A
= 25
°
C
OUTPUT VOLTAGE (V)
5
0
O
–8
1485 G02
–4
4
3
–12
–16
2
–2
–6
–10
–14
–18
T
A
= 25
°
C
TEMPERATURE (
°
C)
–50
3.0
O
3.8
50
1485 G03
3.4
–25
125
4.2
4.6
0
25
75
100
4.8
4.4
4.0
3.6
3.2
I = 8mA
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