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參數資料
| 型號： | LTC1347 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-PDIP 0 to 70 |
| 中文描述： | 5V的低功耗的RS232 3-Driver/5-Receiver收發器在關機5接收機活動 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 221K |
| 代理商： | LTC1347 |
1
LTC1347
5V Low Power RS232
3-Driver/5-Receiver Transceiver
with 5 Receivers Active
in Shutdown
S
FEATURE
D
The LTC1347 is a 3-driver/5-receiver RS232 transceiver
with very low supply current. In the no load condition, the
supply current is only 300
μ
A. The charge pump only
requires four 0.1
μ
F capacitors.
In Shutdown mode, all five receivers are kept alive and the
supply current is 80
μ
A. All RS232 outputs assume a high
impedance state in Shutdown and with the power off.
The LTC1347 is fully compliant with all data rate and
overvoltage RS232 specifications. The transceiver can
operate up to 120kbaud with a 2500pF, 3k
load. Both
driver outputs and receiver inputs can be forced to
±
25V
without damage, and can survive multiple
±
10kV ESD
strikes.
U
ESCRIPTIO
I
Low Supply Current: 300
μ
A
I
Five Receivers Kept Alive in Shutdown
I
ESD Protection Over
±
10kV
I
Operates from a Single 5V Supply
I
Uses Small Capacitors: 0.1
μ
F
I
Operates to 120kBaud
I
Three-State Outputs Are High Impedance When Off
I
Output Overvoltage Does Not Force Current Back
into Supplies
I
RS232 I/O Lines Can Be Forced to
±
25V
Without Damage
I
Pin Compatible with LT1137 and LT1237
I
Flowthrough Architecture
U
S
A
O
PPLICATI
I
Notebook Computers
I
Palmtop Computers
3-Drivers/5-Receivers with SHUTDOWN
U
A
O
PPLICATI
TYPICAL
Quiescent and Shutdown Supply Current vs
Temperature
1200
1347 TA01
V
CC
C1
0.1
μ
F
LTC1347
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DRIVER 1 OUT
RX1 IN
DRIVER 2 OUT
RX2 IN
RX3 IN
RX4 IN
DRIVER 3 OUT
RX5 IN
ON/OFF
NC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C3
0.1
μ
F
DRIVER 1 IN
RX1 OUT
DRIVER 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DRIVER 3 IN
RX5 OUT
GND
NC
NC
V
–
V
+
C2
0.1
μ
F
C4
0.1
μ
F
TEMPERATURE (°C)
Q
μ
A
1000
800
600
400
200
0
–40
20
40
60
1347 TA02
80
0
120
100
80
60
40
20
0
S
μ
A
QUIESCENT
CURRENT
SHUTDOWN
CURRENT
TEST CONDITION:
V
CC
= 5V, ALL DRIVER INPUTS TIED TO V
CC
.
–20
100
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| LTC1347CS | 5V Low Power RS232 3-Driver/5-Receiver Transceiver with 5 Receivers Active in Shutdown |
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