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參數(shù)資料
| 型號(hào)： | LTC1335C |
| 廠商： | Linear Technology Corporation |
| 英文描述： | RS232/EIA562/RS485 Transceivers |
| 中文描述： | RS232/EIA562/RS485收發(fā)器 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大小： | 454K |
| 代理商： | LTC1335C |
4
LTC1321/LTC1322/LTC1335
DC ELECTRICAL CHARACTERISTICS
V
CC
= V
DD
(LTC1321/LTC1322) = 5V
±
5%, V
EE
= –5V
±
5% (Notes 2, 3)
SYMBOL
Supply Currents
I
CC
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
Supply Current
No Load (SEL1 = SEL2 = HIGH)
Shutdown, ON/OFF = 0V
No Load (SEL1 = SEL2 = LOW)
Shutdown, ON/OFF = 0V
No Load (SEL1 = SEL2 = HIGH)
Shutdown, ON/OFF = 0V
G
G
1000
15
300
0.1
–1000
–0.1
2000
50
1000
50
–2000
–50
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
I
DD
V
DD
Supply Current (LTC1321/LTC1322)
G
G
I
EE
V
EE
Supply Current
G
G
AC
V
CC
= V
DD
(LTC1321/LTC1322) = 5V
±
5%, V
EE
= –5V
±
5% (Notes 2, 3)
SYMBOL
EIA/TIA-562 Mode (SEL1 = SEL2 = LOW)
SR
Slew Rate
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Figure 4, R
L
= 3k, C
L
= 15pF
Figure 4, R
L
= 3k, C
L
= 1000pF
Figure 4, R
L
= 3k, C
L
= 2500pF
Figures 4,10, R
L
= 3k, C
L
= 15pF
Figures 4,10, R
L
= 3k, C
L
= 15pF
Figures 5,11
Figures 5,11
G
G
14
7
1.9
0.6
0.6
0.3
0.4
30
V/
μ
s
V/
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
4
t
T
t
PLH
t
PHL
t
PLH
t
PHL
RS485 Mode (SEL1 = SEL2 = HIGH)
t
PLH
Driver Input to Output
t
PHL
Driver Input to Output
t
SKEW
Driver Output to Output
t
r
, t
f
Driver Rise or Fall Time
t
ZL
Driver Enable to Output Low
t
ZH
Driver Enable to Output High
t
LZ
Driver Disable from Low
t
HZ
Driver Disable from High
t
PLH
Receiver Input to Output
t
PHL
Receiver Input to Output
t
SKEW
Differential Receiver Skew,
t
PLH
-t
PHL
Receiver Output Enable/Disable (LTC1335)
t
ZL
Receiver Enable to Output Low
t
ZH
Receiver Enable to Output High
t
LZ
Receiver Disable from Low
t
HZ
Receiver Disable from High
Transition Time
Driver Input to Output
Driver Input to Output
Receiver Input to Output
Receiver Input to Output
G
0.22
3.1
4
4
6
6
G
G
G
G
Figures 2,7, R
L
= 54
, C
L
= 100pF
Figures 2,7, R
L
= 54
, C
L
= 100pF
Figures 2,7, R
L
= 54
, C
L
= 100pF
Figures 2,7, R
L
= 54
, C
L
= 100pF
Figures 3,8, C
L
= 100pF, S1 Closed
Figures 3,8, C
L
= 100pF, S2 Closed
Figures 3,8, C
L
= 15pF, S1 Closed
Figures 3,8, C
L
= 15pF, S2 Closed
Figures 2,9, R
L
= 54
, C
L
= 100pF
Figures 2,9, R
L
= 54
, C
L
= 100pF
Figures 2,9, R
L
= 54
, C
L
= 100pF
G
20
20
40
40
5
15
50
50
50
60
60
70
10
70
70
15
40
90
90
90
90
140
140
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
G
G
G
3
G
G
G
G
G
20
20
G
G
Figures 6,12, C
L
= 15pF, S1 Closed
Figures 6,12, C
L
= 15pF, S2 Closed
Figures 6,12, C
L
= 15pF, S1 Closed
Figures 6,12, C
L
= 15pF, S2 Closed
G
40
40
90
90
ns
ns
G
G
40
90
ns
G
50
90
ns
The
G
denotes specifications which apply over the full 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 at V
CC
= V
DD
(LTC1321/LTC1322) = 5V,
V
EE
= –5V, and T
A
= 25
°
C.
Note 4:
Short-circuit current for RS485 driver output low state folds back
above V
CC
. Peak current occurs around V
O
= 3V.
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