參數(shù)資料
型號(hào): LTC1337
廠商: Linear Technology Corporation
英文描述: 5V Low Power RS232 3-Driver/5-Receiver Transceiver(5V,低功耗,3發(fā)5收RS-232收發(fā)器)
中文描述: 5V的低功耗的RS232 3-Driver/5-Receiver收發(fā)器(5V的,低功耗,3發(fā)5收的RS - 232收發(fā)器)
文件頁(yè)數(shù): 4/8頁(yè)
文件大小: 205K
代理商: LTC1337
4
LTC1337
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
V
CC
Supply Current
TEMPERATURE (°C)
0
L
μ
A
60
45
40
35
30
25
20
15
10
5
0
1337 G05
20
70
10
30
40
50
V
OUT
= –20V
V
OUT
= 20V
TEMPERATURE (°C)
0
S
60
20
16
14
12
10
8
6
4
2
0
1337 G04
20
70
10
30
40
50
3 DRIVERS LOADED
R
L
= 3k
1 DRIVER LOADED
R
L
= 3k
Driver Short-Circuit Current
Driver Leakage in SHUTDOWN
Receiver Short-Circuit Current
Driver Output Waveforms
INPUT
DRIVER
OUTPUT
R
L
= 3k
DRIVER
OUTPUT
R
= 3k
C
L
= 2500pF
Receiver Output Waveforms
RX
OUTPUT
C
L
= 50pF
INPUT
PI FU
V
CC
:
5V Input Supply Pin. Supply current less than 1
μ
A in
the SHUTDOWN mode. This pin should be decoupled with
a 0.1
μ
F ceramic capacitor.
GND:
Ground Pin.
ON/OFF:
TTL/CMOS Compatible Shutdown Pin. A logic
low puts the device in the SHUTDOWN mode which
reduces input supply current to less than 1
μ
A and places
all drivers and receivers in high impedance state.
V
+
:
Positive Supply Output (RS232 Drivers). V
+
2V
CC
1V. This pin requires an external capacitor C = 0.1
μ
F for
charge storage. The capacitor may be tied to ground or 5V.
With multiple devices, the V
+
and V
pins may be paral-
U
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 50
.
TEMPERATURE (°C)
0
S
60
20
18
16
14
12
10
8
6
4
2
1337 G06
20
70
10
30
40
50
I
SC+
I
SC–
TEMPERATURE (°C)
0
S
60
55
50
45
40
35
30
25
20
15
10
1337 G07
20
70
10
30
40
50
I
SC+
I
SC–
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