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參數(shù)資料
| 型號： | LTC1338 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 5V Low Power RS232 5-Driver/3-Receiver Transceiver(5V,低功耗，5發(fā)3收RS-232收發(fā)器) |
| 中文描述： | 5V的低功耗的RS232 5-Driver/3-Receiver收發(fā)器（5V的，低功耗，5發(fā)3收的RS - 232收發(fā)器） |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 197K |
| 代理商： | LTC1338 |
4
LTC1338
TYPICAL PERFOW U
V
CC
Supply Current
Driver Leakage in Shutdown
Driver Short-Circuit Current
TEMPERATURE (°C)
–40
S
20
25
30
20
60
LTC1338 TPC04
15
10
–20
0
40
80
100
5
0
5 DRIVERS LOADED
R
L
= 3k
1 DRIVER LOADED
R
L
= 3k
TEMPERATURE (°C)
–40
0
S
4
8
10
12
40
20
LTC1338 TPC06
6
0
80
14
16
18
–20
60
20
100
I
SC+
I
SC–
TEMPERATURE (°C)
–40
0
L
μ
A
20
50
0
40
60
LTC1338 TPC05
10
40
30
–20
20
80
100
V
OUT
= –20V
V
OUT
= 20V
Receiver Short-Circuit Current
Driver Output Waveforms
Receiver Output Waveforms
TEMPERATURE (°C)
–40
10
S
30
60
0
40
60
LTC1338 TPC07
20
50
40
–20
20
80
100
I
SC–
I
SC+
DRIVER
OUTPUT
R
= 3k
C
L
= 2500pF
DRIVER
OUTPUT
R
L
= 3k
INPUT
LTC1338 TPC08
LTC1338 TPC09
RECEIVER
OUTPUT
C
L
= 50pF
INPUT
PI FU
V
CC
:
5V Input Supply Pin. Supply current less than 0.2
μ
A
in the SHUTDOWN mode. This pin should be decoupled
with a 0.1
μ
F ceramic capacitor.
GND:
Ground Pin.
RECEIVER ENABLE:
TTL/CMOS Compatible Enable Pin.
Refer to Table 1 for its functional description. This pin can
not float.
DRIVER ENABLE:
TTL/CMOS Compatible Enable Pin. Re-
fer to Table 1 for its functional description. This pin can not
float.
V
+
:
Positive Supply Output (RS232 Drivers). V
+
2V
CC
–
1V. This pin requires an external capacitor C = 0.1
μ
F for
U
charge storage. The capacitor may be tied to ground or 5V.
With multiple devices, the V
+
and V
–
pins may be paral-
leled into common capacitors. For large numbers of
devices, increasing the size of the shared common storage
capacitors is recommended to reduce ripple.
V
–
:
Negative Supply Output (RS232 Drivers). V
–
2V
CC
– 1.5V. This pin requires an external capacitor C = 0.1
μ
F for
charge storage.
C1
+
, C1
–
, C2
+
, C2
–
:
Commutating Capacitor Inputs. These
pins require two external capacitors C = 0.1
μ
F: one from
C1
+
to C1
–
, and another from C2
+
to C2
–
. To maintain
charge pump efficiency, the capacitor’s effective series
resistance should be less than 20
.
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